Comptometer (1920)

Comptometer Adding Machine

Comptometer was a very popular name in the first part of the 20th century. Some comptometers came in wood cabinets. The one pictured was in a copper case, with a wooden stand. It was hand crank operated.

For excellent historical coverage of the history of the Comptometer,

see "The Biography of a Machine" included here

courtesy of Brooke W. Boering.


History of Computing

An Encyclopedia of the People and Machines that Made Computer History


Copyright 1982-2000, Lexikon Services "History of Computing" ISBN 0-944601-78-2

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