Thomas De Colmar's Arithmometer, c 1870.

Made:
1880-1900 in Paris

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Buy this image as a print 

License this image for commercial use at Science and Society Picture Library

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Arithmometer by Thomas de Colmar, no.2034.
Science Museum Group Collection
© The Board of Trustees of the Science Museum

Arithmometer by Thomas de Colmar, no.2034.
Science Museum, London|UCL
Science Museum, London|UCL

Thomas De Colmar arithmometer with detachable lid, no. 2034, 1880-1900. Charles X Thomas de Colmar invented his
Science Museum Group Collection
© The Board of Trustees of the Science Museum

Arithmometer calculating machine with detachable lid by Thomas de Colmar, no.2034

Thomas De Colmar arithmoneter with detachable lid, no. 2034, 1880-1900. Charles X Thomas de Colmar invented his 'arithmometer' in 1820, which became the first commercially successful calculating machine in the 1860s. It could be used for addition, subtraction, division and mulitiplication. The mechanism was based on the stepped reckoner invented by Liebniz (1646-1716). Machines of this type were made well into the 20th century.

Details

Category:
Mathematics
Object Number:
1967-69
type:
calculating machine (stepped drum) calculating machine (stepped drum)
credit:
University College, London
status:
Permanent collection

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