Addipresto
Addipresto
Addo-X, Electro-Mechanical Calculator
Bergmann Unical Universal Calculator. This is a large set of multiplication tables.
Burroughs, number A786493, produce by Burroughs Adding Machine Ltd., Nottingham, England, Parts Made in U.S.America.
Comptometer 993e, Electro-Mechanical Calculator
Consul the Educated Monkey working replica
Contex
Countess
Cribbage Board a simple device for the addition and subtraction of points during card games
Curta Type I Number 29249
Facit
Fraction of an Inch Adding Machine
Genaille Lucas Rods for Multiplication
Genaille Lucas Rods for Multiplication. This is a nice reproduction set made in USA by Creative Crafthouse.
Genaille Lucas Rods for Division
Genaille Lucas Rods for Division. This is a nice reproduction set made in USA by Creative Crafthouse.
Gerber Scientific Instrument Company Variable Scale TP-007100
Gerber Scientific Instrument Company Graphanalogue GA 103
Marchant, Block and Anderson Ltd. London and Darlington, Branches Birmingham, Bristol, Cardiff, Glasgow Liverpool, Manchester, Newcastle, Nottingham, Sheffield, Southampton.ACT10M-243147.
Mr.Smart
Muldivo Mentor
Multical
Napier's Bones Reproduction
Napier's Berechenbar, a German version of Napier's Bones, it comes with only one set of Rods therefore whilst it works well as a demonstration piece you would need 5 or 6 for it to be useful for simple multiplication.
Nippon NCM HL-21
Olivetti
Original Ohdner
Pencil Box with Multiplication Table
Positional Arithmatic using Lego. The Sum 10101010 x 1001 in Binary (170 x 9 in Decimal) is set up on the first board. The answer 10111111010 (1530) is shown on the second board.
Qeeen Elizabeth II Coronation Pencil Case Calculator
Recnomatic
Solo
Spirule
Sumlock Comptometer
Sumlock Plus, Pounds, Shillings, Pence and Farthings Comptometer
Sumlock Comptometer, works with Pounds, Shillings and Pence. To add in 11 pence in the right-most column it would be neccessary to press the 9 and the 2 or the 8 and 3 etc, whichever one prefers. The right-most digit counts up to 11 before carrying to the Shillings digit.
Sumlock Comptometer, Shillings, Pence and Farthings as Decimals of a Pound
Swift
Triumphator
Young's Tidal Depth Estimator. Designed by Walter Young, M.Inst. P.I., Manufactured by Smiths (Calculators) Ltd, Beaminster.
