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. |
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For excellent historical coverage of the history of the Comptometer, see "The Biography of a Machine" included here courtesy of Brooke W. Boering. |
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History of Computing
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