Comptometer Section

This is a model of a section of a relatively late Comptometer, a full-keyboard non-listing adding machine built in Chicago.
This model has one column of white plastic keys and two partial columns. Odd numbered digit keys are concave, even numbered ones, flat. It has a steel mechanism, aluminum numeral wheels, a bell, and a metal handle to the right of the keys. Next to the keyboard at the back right is a red key. The model has no case. A label received with the collection dates the model M Comptometer to 1939.
The machine was part of the collection of Felt & Tarrant Manufacturing Company, makers of the Comptometer. It was donated to the Smithsonian by the successor firm of Victor Comptometer Corporation.
Accession Journal 1991.3107.06.
Currently not on view
Object Name
adding machine section
date made
Felt & Tarrant Manufacturing Company
Physical Description
steel (overall material)
plastic (overall material)
aluminum (overall material)
overall: 15.3 cm x 12 cm x 35.5 cm; 6 1/32 in x 4 23/32 in x 13 31/32 in
place made
United States: Illinois, Chicago
ID Number
catalog number
accession number
Science & Mathematics
Adding Machines
See more items in
Medicine and Science: Mathematics
Adding Machines
Data Source
National Museum of American History, Kenneth E. Behring Center
Credit Line
Gift of Victor Comptometer Corporation
Additional Media

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