ID#

LOC

DESCRIPTION

Use. One turn of the crank automatically multiplies the accumulator by a single digit specified by a pointer in the upper left hand corner of the machine. The pointer is reset for each digit in the multiplier until the computation is complete.

CHM

Use. Multiplying 2432 by 598 may be performed as follows: Lift the hinged plate, turn and release the two milled knobs to bring all the figure wheels to show zero; lower the hinged plate in its position to the extreme left; set the number 2432 on the four slots on the fixed plate; set the lever on the left to "multiplication" and turn the handle eight times; lift the hinged plate, slide it one step to the right, and lower it into position; turn the handle nine times; step the plate one point to the right again and the turn the handle five times. The product 1,454,336 will then appear on the top row, and the multiplier 598 on the next row of figures.

CHM

Marked B4 and B50.79 (wr #).

CHM

Use. By means of movable cylinders any length of spiral line may be at once transferred to any other part of the scale, and multiplications and divisions containing a series of factors can be worked with facility. Logarithms of numbers are given by means of a scale on the longer index arm together with a circular scale on the first cylinder, so that powers and roots are obtainable. The surface of the middle cylinder bears printed tables of decimal equivalents, natural sines, etc.

Use. Operation is based on continuous integration. A curve is traced using the pointer, with the area read off on the dial after the complete perimeter has been traversed. As the pointer is moved the rollers that measure distance on the conical shaft calculate the product of the vertical distance times the horizontal distance. As a curve is traversed in a clockwise direction, the top area is integrated in a positive direction. On the return trip the integration is negative and the net value is provided.

Burroughs, 1 "Burroughs Model 5", Two Register, Keyed Wheel, Mechanical, USA, 5-146-1088, 28x25x12 cm, Black, Metal,, Buy, City Office Equipment, (76).

Burroughs, 1 "Burroughs" Single Register, Keyed Wheel, Mechanical, USA, A342273, 18x25x27 cm, , Buy, City Office Equipment, (76).

Through effective marketing and training of skilled operators versed in complement arithmetic at Comptometer Schools, these machines became the workhorse of the accounting profession in the first part of the century. They never successfully advanced into the electro-mechanical era, but remained purely mechanical, two-function adding and subtracting machines.

CHM

Monroe Calculating Machine Co., 1 "Monroe Electric Calculator No. 1", Three Register, Keyed Rotary, Electro-Mechanical, USA, 336948, 38x31x24 cm, Buy, City Office Equipment, (76).

Monroe Calculating Machine Co., 1 "Monroematic" Four Register, Automatic Keyed Rotary, Electro-Mechanical, USA, 506781, 18x23x34 cm, Gray, Metal, Buy, City Office Equipment, (76).

Friden, 1 "Friden Calculator Model D-8", Four Register, Automatic Keyed Rotary, Electro-Mechanical, USA, 202762, 38x26x20 cm, Buy, City Office equipment, (76).

Monroe, 1 "High Speed Adding Calculator", Three Register, Keyed Rotary, Electro-Mechanical, USA, 15x25x24 cm, Black, Buy, City Office Equipment, (76).

Burroughs, 1 "Burroughs Adding Machine Model A", Two Register, Keyed Wheel, Mechanical, USA, A605824, 22x15x12 cm, Black, Metal, 5 Digit, Buy, City Office Equipment, (76).

Underwood, 1 "Standard Typewriter No. 5" Typewriter, Mechanical, USA, 22x30x30 cm, Buy, City Office Equipment, (76).

IBM, 1 "IBM" Typewriter, Electro-Mechanical, USA, 112-42085, 26x44x40 cm, Gray, Justowriter Corp On Motor Housing, Buy, City Office Equipment, (76).

CHM

See B1.75

CHM

Cased English drawing instruments made in the second half of the l9th century. Brass and steel instruments, ruling pen with ivory handle; l3 separate items in lift-out tray. Small boxwood rule in space below. Rosewood veneered case and instruments in fine condition except that the large compass is missing its pivot locking nut and the brass has become a bit dull.

CHM

Cased presentation of an English rolling parallel rule. Pasted to the inside cover is the presentation certificate, "Bradford Technical College Prize Awarded to Fred Inman at the Annual Examination, 1893, by order of the Lords of the Committee of Her Majesty’s most honourable privy council on education."

Use. A pair of dividers is necessary to read the relationships on all sectors. This instrument is marked: "Chords, Sec, Lines, Tangents, tan, Ver Sine, Sines, & Num." The scale layout permits this sector to be used as a Gunter rule as well, although it is not laid out to follow any of the five editions of Gunter, but is close to the example in Stone (B18.78).

CHM

Burroughs Adding Machine Company, 1 "Burroughs" Single Register, Keyed Wheel, Mechanical, ca 1920, USA, A335701, 15x30x25 cm, Black, Metal, Complement Arithmetic Nine Digits, Buy, City Office Equipment, (78).

Friden, 1 "Friden Model 132" Four Register, Automatic Keyed Rotary, Transistor, USA, 3235, 26x45x54 cm.

1 Parallel Rule Parallel, Fixed, Rule, Craft, ca 1870, 45x6x1 cm, Rosewood and Brass, Buy, (78).

DG Marketing Ltd, 1 "International Metric Converter", Table, Manipulable, Craft, 1978, Hong Kong, 10x8x6 cm, Black, Plastic, Buy, (78).

CHM

1 Soroban, Single Register, Bead, Manual, 4x11x29 cm.

Use. Addition is accomplished by reading the appropriate bones along the diagonal. To obtain a product of 224 x 44, the rods 2, 2, and 4 are put alongside each other, and the result is read off by combining the numbers in the fourth row -- 0/8, 0/8, 1/6 -- for the correct answer 896. This is repeated and the two products added together to give 9856. The bones are sometimes associated with an abacus to provide a store in the multiplication process.

Use. On one side, the A line on the rule and the B and C lines on the slider are each numbered twice from 1-10, reading from left to right. The fourth line E is inverted, and is so arranged that 144 is opposite 1 and 10 on the A line. So that if length in feet on E be set opposite thickness in inches on C, the volume in cubic feet is read off on B opposite width in inches on A. The B line is subdivided into tenths, while the A, C, and E lines are subdivided into fourths. On the other side of the rule are A, B and C lines with the girt line (marked D) numbered from 4-40 and bearing various gauge points. The A and D lines are subdivided into fourths. The two edges of the rule bear scales of inches divided into quarter-inches.

CHM

A small replica of the Pascal-type adder made to illustrate the mechanism. For a description of the original Pascal machine, see B150.80.

CGB

Gordon’s slide rule used at MIT. Marked B32.79

CHM

Casio, 1 "Casio Mini Card Calculator" Five or More Registers, Computer-controlled, IC, Japan, 5x8 cm, Calculator and Case, Buy.

Use. Functions include logarithms, exponentials, trigonometric, decimals, scientific notation, and degrees and radians are used. Reverse Polish notation replaces conventional parenthesis.

Aluminum Housewares Co. Inc., 1 "Fairgrove Adder", Single Register, Pascal wheel, Mechanical, 1975, Hong Kong, 2x5x10 cm, Plastic, Buy, (79).

Use. Addition or subtraction is carried out by dialing the numbers starting with the least significant. A carry is performed by moving the final digit around the corner to the next linear register.

Foto-mem Inc., 1 Slide RuleLinear, 2-3 part, Slide Rule, Craft, Japan, 2x14x.5 cm.

CHM

NOTE: Has box in cabinet below display shelves.

CHM

Yanasa, Tokei, Keiki Co. Ltd., 1 "Geigy Pedometer", Single register, Escapement ratchet, Mechanical, Japan, 3d x1 cm.

CHM

Monroe Calculating Machine Co., 1 "Monroe" Calculator, Four Register, Automatic Keyed Rotary, Electro-mechanical, USA, J421231, 15x30x26 cm, Gray, 8 Digit, Buy, (79).

See B4.76.

CHM

Use. (See British Science Museum exhibit and description).

Bing, 1 "Bing No.2" Typewriter, Mechanical, ca 1930, Germany, 15x28x38 cm, 1926 patent pending, Case and Typewriter, Buy, (80).

Sharp Corporation, 1 "Elsi MATE El-8048" Electronic Calculator Soroban, Five or More Registers, Computer-controlled, IC, 1979, Japan, 921, 30x9x2 cm, Plastic, Buy.

Royal London Co Ltd, 1 "Executive Thought Organizer", Toy, Transistor, Japan, 11d x10 cm, Plastic.

CHM

J.S.M., 1 Navigator’s Gunter Rule, 2-3 Part Gunter Rule, Craft, ca 1800, England, 60x5x.5 cm, Buy, Historical Technology Inc., (79).

Stanley, 1 "Fuller’s Spiral Slide Rule" Spiral, 2-3 Part, Slide Rule, Craft, ca 1880, England, 33x10x10 cm, paper, wood, metal, cylindrical case and rule, Buy, Historical Technology Inc., (79).

See B5.76

Manlove, Alliott, Fryer & Co., 1 "Boucher’s calculating circle" Circular, 2-3 Part, Slide Rule, Craft, France, BUY, (79).

CHM

A version of the classical trigonometer signed and dated "THE LOWRY MFG. CO/BOSTON, U.S.A./PAT. 1887, ‘92, ‘96". It has two four and a half inch compass bearing dials, one fixed at the end of the twenty-six inch long graduate slotted base plate, the other sliding, and each with graduated pivoted arms of l8 3/8" radius. It was intended for the analog solution of the plane triangle knowing two angles and included side, two sides and the included angle, or three sides. Thus it was useful for problems both of navigation and gunnery.

See B4.76

The rule is specially arranged for the use of excise officers and maltsters in gauging computations. Slide rules for this purpose were first devised by Thomas Everard in 1683, and modified by Vero, Leadbetter and others. In this example, four scales appear on one side and the other side is blank.

CHM

See B29.77

CHM

See B9.76

Fowler & Co., 1 "Fowler’s Calculator" Circular, 2-3 Part, Slide Rule, Mechanical, 5660, 6d x1 cm, Buy, Ampersand, NY, (80).

CHM

J.R. Bunnell, 1 Telegraph Key And Receiver, Electro-mechanical, ca 1900, USA, 10x10x20 cm, Key and Receiver, Buy, Victor, Co., (80).

CHM

Marchant, 1 "Marchant" Four Register, Automatic Keyed Rotary, Electro-mechanical, ca 1950, USA, B-M-112311, 40x25x31 cm, Metal, Buy, (80).

CHM

Corona, 1 "Corona No. 3" Portable Typewriter, Mechanical, ca 1920, USA, 480206, 23x25x12 cm, Black, Metal, Carriage folds up over keyboard, Buy, (80).

See B42.80

Molle Typewriter Co., 1 "Molle No. 3" Typewriter, , Mechanical, USA, 6824, 25x28x33 cm, Black, Metal, Case and Typewriter, Buy, (80).

CHM

Swift & Anderson Inc., 1 Gunnery Level, 2-3 part, Sight and Level, Mechanical, ca 1910, Lead, Brass and Glass, Buy, Ron Hoffmann, NY, (80).

Adler, 1 "Favorit 2" Portable Typewriter, Mechanical, ca 1940, Germany, 2103, 36x28x11 cm, Black, German Keyboard, Case and Typewriter, Gift, Burt Still.

CHM

W & E Co., 1 Telegraph Receiver and Relay, Electro-mechanical, ca 1890, USA, 10x20x12 cm, Receiver and Relay, Buy, Victor, Co., (80).

CHM

Heath and Co. Ltd., 1 Sextant, 2-3 Part, Location-finder, Mechanical, ca 1920, England, W450, 35x25x17 cm, Certified at The National Physics Laboratory, Case and Sextant, Buy, Joe Stamps, NY, (80).

Digital Equipment Corp., 1 PDP-6 Signed Photo, Photo, Transistor, 1967, USA, Gift PDP-6 Engineers.

Digital Equipment Corp., 1 PDP-8 Flip-flop R201, Logic Module, Transistor, 1966, USA, 1x15x7 cm.

1 Vacuum Tube Logic Module M.D.Type 8, Logic Module, Electronic, 1950 USA, 108, 10x30x35 cm.

CHM

1 Field Microscope, Mechanical, France, 5x5x15 cm, Brass, Glass, Wood, Wooden Box and Microscope, Buy, Ron Hoffman, NY, (80).

Cohen, Harold, 4 "Amsterdam Suite", Artwork, 1977, 3 Line Drawings, 1 Colored, Framed Lithographs, Gift, Harold Cohen.

MARX, 1 "Dial Typewriter", Toy, Mechanical, ca 1950, USA, 15x15x30 cm, Buy, J Stamps, NY, (80).

See B36.79

Digital Equipment Corp., 1 PDP-11/20 Module Artwork, Artwork, Transistor, 1969, USA, 100x94 cm, Mylar in Plexi, Gift J O’Loughlin.

CHM

A.B. Dick, 1 "The Edison Mimeograph No. 1", Mechanical, ca 1900, USA, 13x33x43 cm, Wood Case and Frames, Complete Cased Set with Roller Etc Buy, (80).

CHM

JJ&EF Johnson Co., 1 Telegraph Key J-44, Electro-mechanical, USA, 12x8x4 cm, Gift, Clyde Still.

CHM

Use. Although the machine performs multiplication by repeated addition as in the Thomas type, the use of the Odhner wheel instead of the Leibniz toothed wheel led to a more compact design. The Odhner wheels fit very close together on the axle on the back. A setting lever, the end of which projects through a slot in the cylindrical portion of the cover plate, forms part of each wheel. If a lever is set against any figure (1 to 9) of its slot, a corresponding number of pins are made to project from its wheel. When the operating handle is turned, these pins gear with small toothed wheels of the product register, which in turn gear with the number wheels in front. The product register is mounted on a longitudinally movable carriage arranged in front of the machine, which carries a second counter for registering the multiplier or the quotient. The handle is turned in a clockwise direction for addition and multiplication, and counter-clockwise for subtraction and division.

CHM

An electrified modification of the Comptometer. See B9.76.

CHM

Use. See B3.76.

CHM

Metallograph Corp., 1 "Musketry Rule of 1918" Linear, 2-3 Part, Slide Rule, Craft, ca 1918, USA, 3x13 cm, Black, Metal, Neck String and Rule, Buy, Ron Hoffman, NY, (80).

A "Brunsviga" type machine made in Germany. See B80.80

See Bl50.80

Olivetti, 1 "Olivetti" Two Register, Keyed Wheel, Electro-mechanical, Argentina, Summa quanta 20, 15x15x30 cm, Plexi-glass, Metal, Paper Tape, Buy, City Office Equipment, (79).

The Curta is the ultimate example of the rotary mechanical calculator. Its small size requires better manufacturing technology than any other mechanical calculator. Model I had an 8-digit input setting, 6-digit counter, and 11-digit accumulator. Model II had an 11-digit setting, 8-digit counter, and 15-digit accumulator. Prior to the electronic calculator, the Curta was the only 4-digit portable calculator and as such was especially popular for use at car rallies.

CHM

A copy of the Burroughs printing-adding machine. See B42.

See B42.

CHM

Monroe Calculating Machine Co., 1 "Monroe No. 1" Three Register, Keyed Rotary, Electro-mechanical, USA, 20x25x30 cm, Metal, Buy, City Office Equipment, (76).

See Bl.75.

CHM

1 Drafting Set, Fixed, Parallel Rule, Scale, Compass, Craft, ca 1800, England, 15x17x30 cm, Brass, Wood, Marble, Cornelius Conklin (owner), Boxed with Box of Tools, Pens, Etc., Buy, (80).

Unlike earlier notations and devices using stones and marks, the abacus utilizes positional notation, including the representation of zeros, differences, with capabilities for multiplication and division. The Chinese abacus has beads in groups of 5 and 2, representing decimal digits. The Japanese first modified this to 5 and 1 and then 4 and 1.

CHM

1 Soroban, Single Register, Bead, Manual, 10x2x40 cm, Wood and Bamboo, 21 Digits, Buy, (80).

1 Abacus, Single Register, Bead, Manual, Taiwan, 2x4x6 cm, Green, Marble and Brass, 9 Digit, Abacus on Marble with Instruction Booklet, Buy, (80).

See Bl50.80.

CHM

KEUFFEL AND ESSER, 1 "E.A. Sperry’s Calculator Circular, 2-3 part, Slide Rule, Craft, USA, S650, 6d x2 cm, Pocket Watch Style, Buy, (80).

CHM

See B30.77

See B30.77

MARX, 1 "Junior Typewriter", Toy, Mechanical, USA, 28x13x18 cm, Gray and Blue, Tin, Bent & Rusty, Buy, (80).

CHM

See B21.78

Welch, 1 Teaching Slide RuleLinear, 2-3 Part, Slide Rule, Display, Craft, USA, 2x23x125 cm, Black, Masonite, With Hangers, Buy, (80).

CHM

T.S. & J.D. Negus, 1 Parallel Rule, Fixed, Rule, Craft, 8x45 cm, Brass, Inscribed with Degrees Buy, The Packet Boat, Boston, (80).

CHM

NOTE: Case in cabinet below display shelves.

CHM

1 Drawing Instruments, Fixed, Compass, Parallel Rule, Scale, Craft, ca 1850, England, 16x7x2.5 cm, Green, Shagreen Case, Brass, Steel, Ivory, Silver & Ebony, Fitted Case, 8 Instruments, Rule, Sector & Parallel Rule, Buy, Arthur Middleton, London, (80).

CHM

The D scale was used to read off translations of inches to centimeters, kilos to pounds, 480 and 500 sheet reams, and various weights of different standard paper cuts.

Dring and Fage, 1 "Leadbetter Slide Rule" Linear, 2-3 Part, Slide Rule, Craft, ca 1800, England, 31x3x2 cm, Brown, Boxwood, Four Sided Slide Rule with Slides on each Side, Buy, Peter Delahar.

A modified Coggeshal type slide rule with one brass and one wood slide. Navigational scales including meridian, chords, latitudes, and hours are inscribed. Freeth and Co. Brimingham is overstamped.

CHM

Use. "Palmer’s Computing Scale" was used to calculate square measures, cubic measures, timber measures, grain measures, liquid measures and interest rates from 3 percent to 10 percent on a daily and monthly basis. "Fuller’s Time Telegraph" (on the reverse) was used to calculate time lapse in days or weeks between any two given dates. In concert these two measures would be useful to dealers in grain, alcohol and other commodity trading.

CHM

Short scale type of "Fowler’s Textile Calculator" with two scales on one side. The other side holds a table equivalency for weft, looms, and reeds.

Use. To find the quantity of water discharged for any given nozzle and a known pressure, place press on scale "b" opposite nozzle on scale "a’, and read discharge through window in slide. To find height of jet for given pressure and nozzle diameter, proceed as above and read opposite arrow in center of slide, the height given on scale "d" for the appropriate nozzle.

1 "Circular Concise Slide Rule" Circular, 2-3 Part, Slide Rule, Craft, ca 1960, Japan, 8d cm, White, Plastic, No. 28; Reverse has Standard Equivalency Tables, Buy, Portobello Rd., (80).

1 Music Box, , Mechanical, 1980, Switzerland, 6.5dx5 cm, Plastic and Aluminum, Plays Jingle Bells, Buy, (80).

CHM

Use. Each key had three positions, upper and lower case and a figure that positioned three levels of the printing wheel.

CHM

1 Jacquard Loom Mechanism, Card-controlled, Loom, Model, Mechanical, ca 1805, France, 16x36x40 cm, Wood, Brass, and Steel, Paper Cards Added by Peter Delahar, Buy, Peter Delahar, (80).

L.M. Ericsson & Co., 1 Printing Telegraph Receiver, Electro-mechanical, ca 1890, Sweden, 7640, 36x42x17 cm, Brass, Wood, Beveled Glass, Key, Brass Spool, Paper Tape, and Receiver, Buy, Arthur Middleton, (80).

See B21.78

A protractor and architect’s proportions are inscribed on one side; engineer’s scale and vernier on the other.

CHM

Protractor and table with set scales at l/20,000, 100,000, and 250,000 inscribed on one side. The other side has scales of one half inch and one inch to the mile, a scale of 1/20,000 in meters and listing of metric equivalents.

1 Parallel Rule, Fixed, Rule, Craft, ca 1890, England, 3.5x15x.2 cm, Ebony and Brass, Buy, Maitland Antiques, (80).

CHM

R. Waddington, Coventry, 1 Lord’s Calculator Circular, 2-3 Part, Slide Rule, Craft, England, 7d x1.5 cm, Chrome and Glass, Buy, Maitland Antiques, (80).

CHM

Fowler’s (calculators) Ltd Sale, 1 "Fowler’s Calculator" Circular, 2-3 Part, Slide Rule, Craft, ca 1920, England, 6d x1 cm, Chrome, Glass and Paper, Long Scale Calculator, Buy, Maitland Antiques, (80).

Use. The rule indicated drill speeds for wrought iron, machinery steel and soft tool steel. One side shows revolutions per minute for diameters ranging from one-sixteenth to three inches for both high speed and carbon steel drills. The other side shows tap and drill sizes and the decimal equivalent for inch divisions.

Use. 1. Set at start. 2. Select wattage notch and dial clockwise to "stop"; 3. Repeat for distance of lamp from the subject; 4. Turn over and repeat for angel of light film speed and subject; 5. Read exposure against F/Ratio.

Thorens, 1 Musical Disk, Mechanical, 1980, Switzerland, 11d x.1 cm, Black and Yellow, Tin, Buy, (80).

CHM

Morris, 1 "Morris’s Measuring Instrument", 2-3 Part, Linear Measure, Mechanical, England, 5.5d x1 cm, Metal, Paper, Cloth, Glass, Case and Instrument, Buy, Maitland Antiques, (80).

CHM

Tacro Inc., 1 Map Measure and Compass, 2-3 Part, Linear Measure, Mechanical, Germany, 7x3.5x.5 cm, Chrome, Paper, Glass.

CHM

1 Drawing Instruments, Fixed, Drawing Instruments, Craft, ca 1900, England, 6x16x2.5 cm, Black Case, Brass, Steel, Wood, Cardboard, 7 Instruments and Case, Buy, Bermondsey Market, (80).

CHM

ADDI-COSMOS, 1 "B.U.G Calculator", Single Register, Pascal Strip, Mechanical, 5223, 4.5x20.5x4 cm, Brass, Steel, Wood, fabric, Instrument and Case, Buy, Portobello Rd, (80).

CHM

1 Drawing Instruments, Fixed, Drawing Instruments, Craft, England, 7x15x2 cm case, Wood, Fabric, Brass, Steel, 4 Instruments and Wood Case, Buy, (80).

CHM

1 Drawing Instruments, Fixed, Drawing Instruments, Craft, England, 10x19x4 cm box, Wood, Brass, Velvet, 10 Instruments and Case, Buy, (80).

CHM

1 Pantograph, Multiple part, Proportional Recorder, Mechanical, ca 1850, England, 85x15x8 cm Case, Brass and Wood, Engraved, J. Davis Cheltenham, Instrument and Case, Buy, Arthur Middleton, (80).

Odhner, 1 "Original Odhner" Odhner, Three Register, Rotary, Mechanical, ca 1920, England, 239-868452, Grey, Metal, Buy, Bermondsey Market, (80).

See B1.75

CHM

SEE B180.81 (Both marked the same)

CHM

1 Scale and Ruled Compass Drawing Instrument, Fixed, Scale and Compass, Craft, USA, 3x12 cm, Metal, "W.B.Pierce Co. Civil Engineers", Buy, (81).

CHM

Depose H.C., 1 Map Mileage Reader, 2-3 Part, Linear Measure, Mechanical, USA, 12x3.5dx.5 cm, Metal, Paper and Glass, Buy, (81).

CHM

1 Counting Beads, Single Register, Bead, Manual, USA, 27x19.5x1 cm, Red, Black, and Green Beads, Wood and Metal, Paint worn off beads, beads missing on top, Buy, (81).

Very compact with three positions for the keys and a wheel device. Small sized ribbon and removable carriage.

CHM

See B3.76.

EUGENE DIETZGEN CO., 1 "DIETZGEN MULTIPHASE STYLE-M IMPROVED DECIMAL TRIG TYPE LOG LOG RULE" Log-log, 2-3 Part, Slide Rule, Craft, 1954, USA, Cat. No. 1738, 5x32x.4 cm, Aluminum and Plexi, Buy, Lincoln City, Ore, (81).

Dietzgen, 1 Slide Rule, Linear, 2-3 Part, Slide Rule, Craft, USA, 26x3x1 cm, Wood and Paper, Buy, (81).

Stanley Rule and Level Co., New Britain, Conn, 1 Coggeshall Rule, 2-3 Part, Slide Rule, Craft, USA, 32x4x.4 cm, Wood and Brass, Buy, (81)

Richardson and Co., Middleton, Co., 1 Coggeshall Timber Slide Rule, 2-3 Part, Slide Rule, Craft, USA, 4x31.5x.3 cm, Boxwood, Brass, and Steel, Buy, NE Trade Fair, (81).

1 Spelling and Counting Board, Single Register, Bead, Toy, Craft, ca 1950, USA, 23d x 2 cm, red, Plastic and Wood, Buy, Lincoln City, Ore., (81).

1 "BABY CALCULATOR", Single Register, Pascal Strip, Mechanical, USA, 14.5x7.5x.7 cm, Black, Gold and Red, Metal, Buy, Lincoln City, Ore, (81).

CHM

Use. The dials show the French monetary unit, the livre, which was divided into 12 deniers, each subdivided into 20 sols. The essential part of the machine was its decimal carry; each toothed wheel moved forward one unit (one-tenth of a revolution on each wheel except those of deniers and sols) when the previous wheel had completed one revolution. Subtraction was based on complementary numbers that could be revealed by moving the strip at the top of the calculator.

Electric Specialty Mfg Co., Cedar Rapids, Ia., 1 Telegraph Key, Transduction, Electro-mechanical, ca 1900, USA, 7x8x18.5 cm, black, metal, Buy, (81).

CHM

SELSI, 1 Map mileage reader and compass, Analog Calcula, 2-3 part, Linear measure, Mechanical, ca 1930, Germany, 11x3.5x.5 cm, The handle also serves as a pencil. Buy, (81).

GKB

An usual all brass example of the rare form of pantograph devised and made by William and Andrew Smith and sold by William Harris c 1820. "A rare type of brass pantograph," P. Delahar.

Corona Typewriter Co., Inc. Groton, N.Y., 1 "CORONA FOUR" Typewriter, TRANSDUCTION, Typewriter, Mechanical, ca 1920, USA, H201124, 26x31x11 cm, Black, case and ribbons missing, Buy, Oregon, (81).

CHM

Burroughs, 1 "Burroughs Calculator" Adding machine, Digital Calcula, Single Register, Keyed Wheel, Mechanical, ca 1910, USA, 5-607901, 18x23x30 cm, Black and green, Metal, Stands on legs at a tilt for ease of operation. Buy, Rte 20 antique store in Wayland, (81).

CHM

Burroughs, 1 "The Burroughs Adding and Listing Machine" Adding Machine, Digital Calcula, Two Register, Key Punch, Mechanical, ca 1900, USA, Black, Metal with beveled glass sides, Buy, Victor, Co., (80).

Burroughs, 1 "The Burroughs Adding and Listing Machine" Adding Machine, Digital Calcula, Two Register, Keyed Wheel, Stand and motor, Mechanical, ca 1910, USA, Black, Metal with beveled glass, Adapted for motorized operation, Stand, motor, calculator, printer, Buy, Oregon, (81).

CHM

Cajori in his "history of the Logarithmic Slide Rule" (1909) lists this unique instrument as No. 211 and notes the manual.

CHM

See B1.75

CHM

Signal Electric Mfg. Co., 2 "Signal Telegraph Instrument" Telegraph Keys and Sounders, Telegraphy, Electro-mechanical, ca 1920, USA, 11x10x16 cm, Wooden base, brass, and other metals, Buy, Westford.

Use: From the Directions for Operating in the case: "First: Hold the machine with rack side toward you. Push carriage to the left to starting point. When doing this see that dog does not catch in rack. Insert paper between rollers from the front. Put finger on key of letter desired and swing it into notch in rim of typecase near the dog: Press downward to print. To make a space without printing, press down on any key near to but not in the notch. To ink apply only a drop of ink to each pad with the end of a matchstick or toothpick. Be careful not to bend the pads down so far as to prevent them from springing back into position. Use only Simplex Ink which will be supplied at 10 cents per tube, cheap ink destroys the face of the type. Do not oil. If keyplate sticks, take a rag moistened with vaseline and hold against underside of keys at the notch and twirl type plate around a few times. If the carriage does not move forward freely, apply a little vaseline to the carriageway where it rubs. Caution! Keep oil or vaseline away from rubber type and ink pads. Oil will swell and destroy the letters."

See B165.81.

Wolverine Supply and Manufacturing Co., 1 "Adding Machine", Digital Calcula, Single Register, Pascal Strip, Mechanical, ca 1950, USA, 10x15x23 cm, Red, blue, and cream, Tin, Buy, Knotty Pine Antique Market, (81).

1 Navigator’s Sector, Analog Calcula, 2-3 Part, Sector, Craft, ca 1880, USA, 3.5x16x.3 cm, wood, BUY, Knotty Pine Antique Market, W. Swanzey, (81).

CHM

1 Navigator’s Sector, Analog Calcula, 2-3 Part, Sector, Craft, ca 1880, USA, 3.5x16x.3 cm, Wood, Buy, Amherst Outdoor Antique Market, (81).

CHM

1 Coggeshall Slide Rule, Analog Calcula, 2-3 Part, Slide Rule, Craft, ca 1850, USA, 4x33x.5 cm, Wood and Brass, No makers name, wood cracked, shows signs of real wear, Buy, Knotty Pine Antique Market, West Swanzey, NH, (81).

CHM

Pickett & Eckel, Inc., 1 Slide Rule, Analog Calculator, 2-3 Part, Log-log, Craft, 1960, USA, 405171, 31x6x3 cm, Yellow, Aluminum and Plexi, Box, Case, instruction pamphlet, and guarantee, Buy, Westford flea market, (81).

CHM

1 Abacus, Digital Calculator, Single Register, Bead, Manual, 29x14x2.5 cm, Wood, 13 digit, Buy, Amherst outdoor antique market, (81).

Burroughs, 1 "Burroughs" Adding Machine, Digital Calculator, Two Register, Keyed Wheel, Mechanical, ca 1950, USA, 8A193393, 22x37x20 cm, Green and Black, Metal, 8 digits with paper tape printing, Buy, (81).

An early Comptometer with the springs showing on the upper keys. The keys are molded differently on alternative rows to give the operator a "feeling" of relative location. The walnut cabinetry and tooling was clearly a hand-made.

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Siemens Brothers & Co., London, 1 Printing Telegraph, Links and Switches, Electro-mechanical, ca 1900, England, 12145, Wood and brass, Does not work, Buy, Portobello Rd., London, (80).

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Nine inch brass sector as described by Edmund Gunter (1581-1626) in 1623. Unsigned by probably made by Elias Allen in 1623.

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1 Counting Beads, Digital Calculator, Single Register, Bead, Manual, 37x2x44 cm, red and black beads, wood and metal, 9 rows by 10 digits, Buy, Joe Stamps, NY, (81).

See B150.80

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See B137.81 (Both marked the same)

1 Abacus, Digital Calcula, Single Register, Bead, Manual, 29x14x2.5 cm, Wood, 13 digit, Buy, Amherst outdoor antique market, (81).

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NOTE: Marked B179.81

SELSI, 1 Map mileage reader and compass, Analog Calcula, 2-3 part, Integrator, Mechanical, ca 1930, Germany, 110x35x5 mm, The handle also serves as a pencil. Buy, Reading flea market, (81).

Digital Equipment Corporation, 1 2 PM Flip Flop, Transistor, 1966, USA, R20YC.

Data Products, 1 Core Memory, 8 K by 19 bit 3W-3D 18 mil planar memory.

Cal Research Computer, 1 Tube and circuit, Philips tube, 00667001, TC3-C5.

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Interesting directions regarding complementary numbers and the use of the simple machine for multiplication.

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Pat No. 2402549

A W Faber, 1 Slide Rule, Analog Calcula, 2-3 Part, Slide Rule, Craft, ca 1935, Germany, 98350, 33x9x270 mm, Ivory, Ivory bonded to wood, Inch and centimeter scales are on opposite sides, Leather case and rule, Buy, D-Bells.

"Directions for use: (1) Consult daily Racing Form for speed ratings, weights and class; (2) Figure rating for each horse in race as follows: (a) turn red dial to best speed rating in past 30 days; (b) turn blue dial to class in key race; (c) Turn yellow dial to weight difference of (a) race and today’s race; (c) Add (or subtract) figures (a) (b) (c). This is horses rating. (3) Horse with at least 2 points aove rest is the choice in this race; (4) Play only if final odds are 2/1 or better; (5) Best results will be had by avoiding 2 year old, maiden, fillies and mares, stakes, hurdle, turf and steeple races and races over 1 1/8 miles."

Cyrus West Field (1819-1892) American merchant, promoter of the first Atlantic cable was botn in Stockbridge, Massachusetts. In 1854, he conceived the idea of the cable and secured a charter to organize the England and American companies. The British and American naval ships, HMS Agamemnon and the USS Niagara were secured to lay the cable. Five attempts were made between 1857 and 58. The first message transmitted, August 16, 1858, read, "England and America are united by telegraph. Glory to God in the highest and on earth peace and good will towards men." The Queen and the President of the United States exchanged congratulations, but the cable ceased working three weeks later. It was necessary for Field to raise new funds and make new arrangements. The great Eastern succeeded in laying a cable in 1866.

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The music box plays six tunes; Robin Adair, the Blue Bells of Scotland, The Campbells are Coming, Auld Lang Syne, Coming Through the Rye, and Bonnie Sweet Home.

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Palmer’s Pocket Scale with rules for its use in solving Arithmetical and Geometrical Problems preceded the large sized Fuller’s scale. See B110.80.

1 Excise slide rule, Moskowitz, (81).

1 "Enigma", Transducer.

1 "Enigma"

1 "Everard" slide rule, Analog Calculator, 2-3 part, Slide rule, Craft, ca 1720, England, 303x17x25 mm, Boxwood, The early form of Everard slide rule with two slides., Buy, Delahar, (82).

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This mileage reader was clearly made for scientific map distance readings. On one side there are scales for 1:2000; 4000; 8000; and 10,000. On the other side the scales read 1:25,000; 50,000; 75,000; and 200,000.

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A calculating device with four printed cylinders 1-9; 10-90; 100-900; and 1000-9000 so arranged that percentages for every half percent from one to six percent can be read through slits. The total of say 6,216 at 4 percent could be figured by adding the sums shown in the four rows. One was presented to the Science Museum by M. Malassis in 1936. Chambon also introduced similar "calculators" for the multiplication tables, called "Multiplicateur Enfantin".

Indicators can keep track of rows, increase, and times. Holes on the side provide a gauge for the needles. And a 4-and-a-half inch rule is along the bottom.

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Colonel Amedee Mannheim designed a slide rule with a cursor about 1850. Tavernier Gravet manufactured this in France and after 1880 exported a large number to England and Germany.

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An engineering surveyor’s slide rule primarily used for calculating distances.

Two-sided revenuers rule with two sliding gauges.

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Similar to B205.

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Loftus, 1 Rule, Guagers rule, Analog Calculator, Single part, Rule, Craft, England, 260x30x30 mm folded, Boxwood, Buy, Bermondsey Market, (82).

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1 Guagers rule, Analog Calculator, Single Part, Rule, Craft, England, 260x30x30 mm folded, Boxwood, Buy, Bermondsey Market, (82).

T.O. Blake Ltd., 1 Guagers cased rule, Analog Calculator, Single Part, rule, Craft, England, 6 cylinders each 25 mm by 3 mm diameter that fit together, Boxwood with a leather case, Six rules in a fitted leather case, Buy, Bermondsey Market, (82).

1 "Consul" Educated Monkey, Table, Readable or Writable Memory, Paper, Linear, Craft, 1916, USA, 139x148 mm, Red, Yellow, Blue and Brown, Tin, Buy, Jeremy Norman and Co., (82).

Jehu Hatfield, 1 Clock interest table, Readable or Writable Memory, Mechanically stable, Cyclic, Craft, 1844, USA, 300x450x170 mm, wood and paper, Buy, Jeremy Norman & Co., (82).

1 Ratchet Adder, Digital Calculator, Single Register, Ratchet, Mechanical, ca 1850, USA, 313x313x10 mm, Brown with Black ink, Brass and Cardboard, Buy, Jeremy Norman, (82).

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See B3.76

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One-sided with two scales for centimeters and inches.

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See B49.79

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Two sided scale with nautical miles, kilometers and statue miles on one side and centimeters to kilometers and inches to miles or versiers on the other.

Manloves, 1 "Boucher’s Calculator" Circular slide rule, Analog Calculator, 2-3 parts, Slide rule, Craft, England, 15mm x 50mm diameter, Nickel, glass and paper, Buy, (82).

See B146.81

Distributed by R. W. Mitscher Co., Inc., Electronic & Electrical Supplies, Ellicott Square Building, Buffalo, New York.

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Patent no. 1,661,605.

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1 "Biomate" Circular moving nomographs, Readable or Writable Memory, Mechanically Stable, Cyclic, 82, Japan, 110x90x12mm, Aqua and cream, plastic, Buy, (82).

Goody Manufacturing Co., 1 "Goody Magic Multiplier Pencil Box", Readable or Writable Memory, Paper, Cyclic, ca 1950, USA, 38dx230mm, blue and orange, paper, Buy, Amherst flea market, (82).

Walt Disney Productions, 1 "Mickey Math", Readable or Writable Memory, Mechanically Stable, Linear, ca 1950, USA, 360x38x5mm, black and white, plastic, Buy, (82).

L. Appoullot, Saint-Birce-sous-Foret, Seine et Oise, France, 1 "Cercle a clacul d"appoullot"nomograph, Readable or Writable Memory, Mechanically Stable, Cyclic, ca 1890, France, 203d mm, painted metal, case and circle, Buy, Alain Brieux, (82).

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Wolverine, 1 "Modern Math Addition", Readable or Writable Memory, Mechanically Stable, Cyclic, ca 1950, USA, 154x180x97mm, red, metal, Buy, Museum Store, (82).

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A. M. Maurand, 1 "Le Prompt Calculateur des arts industriels et du commerce", Readable or Writable Memory, Paper, Random, ca 1863, France, 105d x 18mm, blue, pink, yellow and green cards, Brass, glass, cardboard, brass case with glass lid, 30 cardboard tables, Buy, Peter Delehar, (82).

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The model made by Stanley is an improvement by the addition of a third index hand on the back dial, which indicates the total movement of the front dial, so that continuous workings show a final result, either + or -, thus indicating the correct reading of the result.

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The device was described by Benjamin Beran (1822).

Tavernier-Gravet, Rue Mayet, 19-Paris, 1 "Regle a Eclimetre" du Colonel du Genle Goulier Slide rule with a site, Analog Calculator, 2-3 part, Slide Rule, ca 1878, France, 186, 320x50x90mm, Boxwood and a metal instrument, Case, slide rule, and instrument, Buy, Peter Delahar, (82).

1 "Calculator" Pascal strip, Digital Calculator, Single Register, Pascal strip, ca 1950, Germany, 85x7x138mm, gold, red, and black, metal, Buy, Amherst flea market, (82).

Sharp, 1 "ELSI MATE EL-835" Solar cell electronic calculator, Digital Calculator, 3-4 Registers, Electronic, 1982, Japan, 17095530, 54x96x3mm, metal, Buy.

CHM

Panasonic, 1 "CompuVoice" Talking electronic calculator, Digital calculator, 3-4 registers, Electronic, 1982, Japan, 22300192, 75x27x143mm, metal, Gift, New York Decus.

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Palatine Engineering Co. Ltd. Liverpool, 1 "Bryan’s Patent Planimeter" Analog Calculator, Multiple Part, non-linear planimeter, ca 1880, England, 70x105x405mm, Brass, Case, instrument, five cams, track made my Peter Delahar, Buy, Peter Delahar, (82).

The 28 type-bars, each of which resembles an inverted U, are arranged in two banks to the right and left of the printing point, so providing complete visibility of the writing, the type striking on to the vertical centre line of the platen. Each bar carries three characters, the machine printing 84 characters by double shift. The use of a bar pivoted at each end is claimed to secure and preserve accurate alignment. The bars rest one within another and, as the length of the extremities vary, the shorter type-bars are provided with heavier type-heads with the object of equalizing the impressions. The paper cylinder is fitted with three rollers, the pressure of which can be released for adjusting the paper. The register pawl can be lifted to free the roller when linving by pencil. Single or double spacing is actuated by a striking motion operated by the marginal stop.

GKB

Ludwig Spitz & Co., 1 "TIM Time is Money" arithmometer, Digital Calculator, 3-4 register, stepped wheel, ca 1880, USA, 420x200x160 mm, black, metal, eight digits, engraved The Oskar Muller Co. New York, Buy, Peter Delahar, (82).

Dalton, 1 Adding and listing machine, Digital Calculator, 1-2 register, Pascal key, USA, Black, Metal, Buy, Amherst flea market, (82).

Hitachi, 1 c-mos i c, tie clasp, 1982?, Japan, Buy.

The eidograph is essentially a more precise and versatile pantograph. Variable ratios can be set on the instrument for enlarging or reducing work. The eidograph was invented by William Wallace in 1801 based on the l7th century pantographThe eidograph is essentially a more preceise and versatile pantograph. Variable ratios can be set on the instrument for enlarging or reducing work. The eidograph was invented by Will

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A nicely made brass t-square with an adjusting arm which allows it to be set to a particular angle as read off the protractor scale.

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The instrument was once the equipment of a Virginia surveyor and retains a fine hand-worked character with great attention to detail, such as fine knurling of the many thumb screws. Smart illustrates a similar instrument by Francis Whiteley of Standardsville, Virginia on p. 165. Both examples are elaborations of Whiteley’s patent of 1836, but with the additions of the sine grid. The patent model and its type were made first, then the design with the sine grid, and finally the most advanced type with serial numbers and an added verneir on the swinging arm for reading the protractor scale as illustrated in Smart.

The instrument is used for enlarging or reducing a drawing with ratios marked along the slot, set by moving the screw pivot in it.

CHM

1 planimeter, Analog Calculator, multiple parts, Mechanical, planimeter and case, Buy, Margaret Weiner Kennedy, (82).

1 Blaise Pascal "auvergnat" la famillle a l’oeuvre, Musee D’art de Clermont-Ferrant, 6 octobre - 8 novembre 1981, Buy, A Brieux, (82).

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J. Archbutt & Sons, 20 Bridge Road, Lambeth, 1 parallel rule, compass and rule, analog calculator, 2-3 part, parallel rule, craft, ca 1850, England, 44x150x2 mm, ivory, Buy, Woburn antiques show, (83).

See 150.80 and 96.80.

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Addiator, 1 "Arithma", Digital Calculator, Single Register, Pascal Strip, Mechanical, ca 1935, Germany, 155x40x3 mm, Black and red, aluminum, case, stylus, instructions, and instrument, Buy, Colorado Springs, (83).

Globe Ticket Company, 4201 Brighton Blvd, Denver, Co., 3 punch card, advertisement on a calendar blotter, March 1960, November 1961, January 1962, USA,98x230 mm ,blotting paper, Buy, Colorado Springs, (83).

1 Planimeter, Analog Calculator, two-three part, Planimeter, Mechanical, 290x110x20 mm, nickel, instrument and case, Buy, Tesseract, (83).

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Automatic Adding Machine Co., New York, 1 "Golden Gem Adding Machine"Pascal strip, Digital Calculator, Single Register, Pascal Strip, Mechanical, 1906, USA, 103x80x20 mm, red and green, metal, case and instrument, Buy, Woburn Antique Show, (83).

The Adding Pencil Co., St. Louis, 1 The Adding Pencil, Model B, Digital Calculator, Single Register, Pascal Wheel, Mechanical, ca 1930, USA, 10dx155 mm, Orange, Metal, Paper instruction case and pencil, Buy, Colorado Springs, (83).

CHM

Top scale is the ballistic coefficient; bottom is coefficient of form; center sliding scale has weight in pounds and diameter in includes. Instructions: with Slide set the Diameter to the Coeff of Form; with Cursor set the value of Theta to the Weight; Read off Ballistic Coeff against Value of T. Reverse side has two sliders. Top stationery rule is ballistic coefficient. Slider has range-yards; time of flight-seconds; height of vertex - fee; angle of elevation or descent. Stationery rule has velocity reduced time in seconds. Slider has velocity and reduced elevation and reduced angle of descent. Botoom stationery rule has velocity. "Designed by S.A. Main, B.Sc.

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Top scale has plate thickness; slider has striking velocity in foot/seconds and diameter of shot in inches; bottom scale has weight of shot in pounds. Sliding cursor has two more scales that are not identified.

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Casio, 1 Mini Card fx-48 Scientific Calculator, Digital Calculator, 1978, Japan, 256023, 90x53x3 mm, Metal, Case, instruction book, unit conversion table, physical constants table, calculator, Buy.

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Commodore US*14, 2 Digital Calculator, Digital Calculator, ca 1970, USA, 11619, 195x290x75 mm, Black and White, Plastic case, transistors, Cord and calculator, Buy, (83).

HDC Industries, 1 "Human Digital Calculator: Add’em up Finger Machine", ca 1980, USA, 140x88x2 mm, Red and White, Cardboard, Buy.

CHM

Patent 2243884

The left rule with input of odometer start and odometer end shows miles driven. The right rule inputting miles driven and miles per gallon, shows gallons used.

Model A prints 36 characters, on 6 inch paper and cost $1.00; Model C, 42 characters on 7 inch paper and cost $1.50; Model D prints 68 characters both capital and small on 7 inch paper and cost $3.00; and Model E prints 72 characters capitals and small letters on 8 inch paper and cost $4. Sold as "useful where speed of pen suffices and carbon copy is not needed. They fascinate and teach children. Their Elders find them useful."

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Barron’s Educational Services, Inc., Woodbury, NY, 1 "Metric Converter" Slide rule, Analog Calculator, 2-3 parts, slide rule, USA, 212x82x2 mm, red, orange, and yellow on white, cardboard, Buy.

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No maker yet this was manufactured.

IBM, 1 plug board for 911, USA, Type 911, #121854, 290x170x30, Stainless steel, plastic coated plugs, Board and plugs, Buy, Computer Museum.

Monroe, 1 "Monroe" calculator, Digital Calculator, 3-4 registers, ca 1950, USA, Model LA7-160; #J716387, 190x150x280 mm, grey, Buy, (80).

1 "SWIFT" HANDY CALCULATOR, Digital Calculator, Single Register, Mechanical, ca 1960, USA, 130x140x86 mm, Blue, Plastic, Buy, Palo Alto Thrift Store, (84).

See letter from Donald Davies in files and instruction book; same as B211.82.

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Hine and Robertson Co. New York, 1 The Lippincopt PlanimeterPlanimeter, Analog Calculator, Multiple Part, Areal Measure, Mechanical, 1898, USA, 190, Nickel, May be missing one dial, Buy, Irwin and Rita Margolis, Brockton, (84).

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Butterfield (1674-1722), 1 Sector, Analog Calculator, 2-3 Part, Sector, Craft, 1700, France, Brass, Buy, Peter Delahar, (84).

See B203.82

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Marion & Co., London, 1 Hurter & Driffield’s Actinograph, Readable or Writable Memory, Craft, 1892, England, Wood and paper, Box, instrument, instructions, Buy, Peter Delahar, (84).

See also 189

Philco, 3 Circuit boards from the Philco 212, Digital computer, ca 1960, USA.

CHM

See 36.79

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Otis King, 1 Cylindrical slide rule, Analog calculator, 2-3 moving parts, Buy, Historical technology.

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Brevete, 1 Circular slide rule, nickel, Buy.

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Keuffel & Esser Co, 1 radial planimeter, Analog Calculator, multiple part, Germany, 22280, steel, case and instrument, Buy.

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1 Abacus, 9 digit, and instruction book, Buy.

Iacobus Matinensis, 1 sector, 1687, Italy, brass, Buy, Antiquarian Scientist.

Jason, 1 Slide Rule No. 803, Analog Calculator, 2-3 part, linear, ca 1955, Japan, plastic laminated wood, case and rule, Buy, NE Trade Show.

Keuffel & Esser Co., 1 Slide Rule, Analog Calculator, 2-3 part, Linear slide rule, ca 1930, USA, 54308, laminated wood, leather case and rule, Buy, NE Trade Show.

Slide rule on one side tables on the reverse. These include Decimal equivalents of one foot, weight metals, and ultimate strength.

CHM

1 "Unique" Universal II Slide Rule, Analog Calculator, 2-3 parts, linear slide rule, England, plastic pinned on wood, Buy, NE Trade Show.

A nautical slide rule. The outer circle has distance and speed in land miles & miles per hour and nautical miles and knots. The inner circle has time ranging from one minute to 10 hours. The reverse side has a compass, map measure scale ratio for 1/20,000, 40,000 and 80,000. Beaufort wind scale, knots and weather bureau description.

CHM

The semicircular protractor has a horncenter and movable arm capable of being set at .5 degrees.

Richmond School Furniture Co., Munci, Indiana, 1 "Junior Spelling and Number Board No. 50" Calculator, Digital Calculator, Single Register, Manual, ca 1940, USA, Red, cardboard, Buy, NE Trade Show.

CHM

See 87.80

Note: Case numbered B325.84 (B326 crossed out)

CHM

"This super slide rule appears to combine features of Hannyngton’s linear grid slide rule and Thatcher’s cylindrical calculator. It differs from the former in that there is no overlap of scales on the base cylinder and from the latter in that each grid bar contains only one scale and that these scales are half the length of the base one. The Rouleau Calculator (Item 164 in the Science Museum catalog) is another Swiss variant of the same design. There are 50 scales, 20" long each on the main cylinder (for a total scale length of 1000 inches) and the same number, 10" long each, on the sliding grid." Historical Technology Catalog 127.

CHM

"Designed to mark the 50th anniversary of the firm and to meet the wants of a great number of people, whose primary requirements are for a device for solving problems of multiplication and division in a rapid and accurate manner." The entire scale is 79" long resulting in almost one full figure increase in accuracy over the 10" slide rule.

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Thomas Heath started in business in 1714. In 1740 he made his apprentice Tycho Wing a partner and Heath & Wing remained in business until Heath’s death in 1773.

CHM

"The Mechanical Engineer", circular slide rule, 1, Switzerland, nickel, brass case, Buy, Historical Technology.

Todd Protectograph Co., Rochester, NY, 1 "Star Adding Machine" Adding Machine, Digital Calculator, Single Register, Mechanical, 1921, USA, Black with red and green, Metal, Buy, MacGregor Ia. antique shop.

CHM

L. C. Stephier, 1 Coggeshall rule, Analog Calculator, 2-3 part, craft, USA, No. 23, 320x40x4 mm, boxwood, Buy.

1 Hinged slide rule, Analog calculator, 2-3 parts, craft, 1800, English, overstamped French, 320x40x4 mm, boxwood and brass, Buy, Peter Delahar.

Unusual hinged slide rule with navigational scales.

Wittnaur Watch Co., 1 Map measure, Analog Calculator, 2-3 Part, Linear calculator, USA, centimeters to inches, Buy, Amherst flea market.

Kueffel & Esser Co., 1 Map measure, Analog calculator, 2-3 parts, linear measure, USA, Model 1744T, inches to feet, Box and measure, Buy, Amherst flea market.

CHM

Watkins, 1 drawing instruments, 1824 newspaper inside, England, "pocket scale set", ivory sector, boxwood rule, lizard case, Buy, Amherst antique market.

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W. L. Jones, 50 Holborn, London, 1 pantograph, Analog calculator, multiple parts, proportional copier, ca 1850, England, Brass, case and instrument, Buy, Amherst antiques.

1 Integrator, 209478, USA, painted red, blue and yellow by Arthur Hall, Bur. Ord. Assembly Drg. No. 194077, U.S. No. 38.

See also 211 and 302

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Otis King, 1 Otis King’s Pocket Calculator Cylindrical slide rule, Analog calculator, 2-3 moving parts, B1597, Leather case and rule, Buy, England.

CHM

"Unique", 1 Universal II Slide Rule, Analog Calculator, 2-3 moving parts, linear slide rule, England, plastic pinned on wood, Buy, England.

"Unique", 1 Log Log Slide Rule, Analog Calculator, 2-3 moving parts, linear slide rule, England, plastic pinned on wood, Buy, England.

"Unique", 1 Slide Rule, Analog Calculator, 2-3 moving parts, linear slide rule, England, plastic pinned on wood, Buy, England.

"Unique", 1 Universal Slide Rule, Analog Calculator, 2-3 moving parts, linear slide rule, England, plastic pinned on wood, Buy, England.

Faber-Castell, 1 Castell slide rule, Analog Calculator, 2-3 moving parts, linear slide rule, Germany, plastic and wood, plastic case and rule, Buy, England.

1 "Coggeshall" Slide Rule, Analog Calculator, 2-3 moving parts, linear slide rule, England, Wood and brass, Engraved, E. Routledge Engineer Bolton, Buy, England.

CHM

Elliott Bros, 440 Strand, 1 Sector, 2-3 moving parts, sector, England, Ivory and brass, Buy, England.

See B259.83

H. Huges & Sons Ltd. London, 1 "Capt Field’s Improved Parallel" parallel rule and compass, Analog Calculator, 2-3 moving parts, England, Wood, Buy, England.

Illustrated in G. Adams, rev W. Jones, Geometrical and Graphical Essays, 4th Ed. London 1813.

See B158.81

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A. Jeffery Camborne, Wilton St. Day, 1 Circular protractor, Analog Calculator, circular protractor with one arm, ca 1900, England, Brass, Wood case and instrument, Buy, England.

Engraved H. F. Mackay; Horizontal equivalents for 20 feet of vertical engraved on one side; rule for degree of slope on the other.

CHM

6 to M. Yards on one side; 8 to M paces or yards on the other.

Victor Adding Machine Co., 36 Second St., Sand Francisco 5, Ca., 1 Adding machine, Digital Calculator, 1-2 register, Pascal key and print, ca 1935, USA, W867 metal plate; 936307 C 7 83 4 stamped in plastic, black and green, plastic "art nouveau" form, Buy, Palo Alto antiques.

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A very rare instrument, modifying the Amsler design.

Arithma and case.

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Sun Henni Japan, The Frederick Post Co, No. 1452W, Universal.

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Aston and Mander slide rule, silver, 1915

Allen & Wales Desk Model

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Burroughs

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Comptometer, broken keys

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Lord’s Calculator. Elliott Bros London No. 35 1880. Example of the giant circular slide rule devised by Lord and made by Elliot Bros. In very fine condition. London, England.

CHM

B173.81?

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DEC Circuit Board in Plexiglas. Made in Galway. PDP1170 Module circa 1976.

GKB

Sage ANFS/67 Module (1958) Present to Gordon and Gwen by Computer History Center.

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Sextant with case.

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Micronta Tool Set made in Germany

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Stanley large, brass planimeter in box.

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Large slide rule in box. Brass, heavy. Box in poor condition.

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Programmable robot toys

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IBM Vacuum Tube Module

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Magic Multiplier Pencil

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Digital Chip Mask Design, silver, 10-Feb-82-11.

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Plug Connector

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Vacuum Tube Module

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Note: PDF file to be included.

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Tape punch

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Regle a calcul signee Elliott Bros. London 1840-50

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Metal circular drafting tool

CHM

NOTE: Could be B372.86 or B373.86

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Lawrence Engineering service slide rule. White painted wood on one side, wood on the other.

CHM

Heavy paper and glass. French. Cardboard case.

CHM

NOTE: Marked B172.81 – Wrong Number

Replica of Napier's bones. Bought Peter Roubos, Netherlands 6/01, gratis.

Napier first described his "bones" in 1617. The bones were a convenient portable digital calculator for multiplication, division and roots, and assumed major importance in the seventeenth century.

Replica of Schickard's clock, height 32 cm, width 26 cm without and 38 cm with slides, depth 15 cm, Mahogany, Bought Peter Roubos,  Netherlands 6/01.

The first mechanical calculator was invented by Wilhelm Schickard, a German scholar who was professor of Hebrew and oriental languages at Tubingen University. He built his original calculating clock in 1623. It consisted of two devices in one: the top was a version of Napier's bones laid out on six cylinders in a box with wooden slates. For bigger calculations a mechanical adder was installed beneath.

Replica of Napier's calculating box, height 8 cm, width 24 cm, depth 12 cm, Mahogany, Bought Peter Roubos, Netherlands 6/01.

The Muse, binary instrument by Triadex Incorporated, 1970. The Muse was invented by two M.I.T. professors, Ed Fredkin and Marvin Minsky. It is a small digital computer that uses electronic technology for sound generation. Synthesized shift register kind of logic.

Note: PDF file to be included.

Abacus, wood and brass, Wang Hing Hong Kong

Mechanical piece built to pick up a nut by Edmund Berkeley, probably 1940's. Bought, Edmund Berkeley.  Marked X358.84

Replica Genaille-Lucas Arithmetique, 1885, height 8 cm, width 38 cm, depth 12 cm, mahogany, Bought Peter Roubos, Netherlands 6/01.

ReBo Machine a Calculer

Chadwick Magic Brain Calculator

Fredrick Post Co. Universal Slide Rule, No 1452W.

Waldes Truarc Retaining Rings Cilcular Calculator, made in USA, K. Jaeger

CH Webb, The Adder, Pat D Nov 5th 12th 1889

MicroVax 1 chip, Silicon Compliers Inc.

DC100A Data Cartridge

Betty Crocker's Cookbook, Franklin Electronic Publishers, in box with User's Manual

Tower 9 Pocket Calculator, West Germany

Negrette & Zambra, Pocket Forecaster, Paten # 6276/15, Patent # 440028/130076, in box with instructions

Hexco, Inc., Hex Adder, Houston TX Cat #3600-3

Tiny brass abacus, approximately 1 1/2 by 4 inches, 15 digits

Callaghan & Co, weather predicting circular slide rule with temperature scale and barometer built into original case.

Brevitz Fabrications, Swiss, Stima calculator, US patented 14 June 1932, D.R.P. No 5415008, with case.

Loga, Double Regle a Calculer

Clary electric calculator. Marked GB57 (wrong number). Auto Electric Sales Co.

Burroughs, A651553, Marked GB67

HP65 calculator. Used by Gordon Bell

Comptometer. J295586

PDP Core Memory Stack.

Drawing instruments in green lizard. Labeled B227.82 - wrong number.

2 Teledapt circular time selectors.

Pickett circular slide rule. Yellow.

Thin, wood abacus.

Digital Spectrum of Products, 1974, blue and white cardboard, pull-out tab, readings for hardware options, software options, and hardware specifications.

Instructions read: “In top horizontal window, set indicator bar under desired CPU. Read Hardware and Software options in corresponding windows. For reverse side of calculator: In appropriate vertical window, set indicator to desired item. Read pertaining data in corresponding horizontal windows above. Setting for each chart is independent of others."

Newham's Rotary Principal Interest Demonstrator, to find the interest for any sum. Also contains a sheet of directions for the use of tables for month and for days. Hard cover.

Every Man's Own Interest Calculator. Hardcover foldout.

100-year calendar 1945-2044. Painted bronze. Marked B231.82 - wrong number.

Keuffel & Esser 4242 planimeter, SN# 2066. Black box with silver and black tracer and pole arms on royal blue velvet backing. Purchased in July 2005 from Betty Ann and Fred Centanni. As a junior at MIT in 1965, Mr. Centanni was given the planimeter by one of his professors for helping to clean out a laboratory.