Comptometer Model E Section

This is a model of a section of a full-keyboard non-printing adding machine. There are four columns of keys. The rightmost column has nine octagonal white plastic keys. Left of this is a column with white 1, 8, and 9 keys. Left of this is a column with black plastic 1 and 8 keys. The leftmost column has nine black keys. Keys for odd digits are concave, and those for even digits are flat. The three number wheels are at the front of the model, in front of the three rightmost columns of keys. The machine has a handle on the right.
The machine is stamped on the right side at the back: 54005. A metal tag attached behind the keys reads: TRADE COMPTOMETER MARK. It also reads: OCT.7.13
The sectional Model E Comptometer is made up of regular Model E production parts. It was made to be used to instruct adjusters and assemblers in the factory and servicemen in the Repairmen’s School and Sales Offices throughout the United States.
The machine came to the Smithsonian from the collections of Victor Comptometer Corporation, the successor firm to Felt & Tarrant Manufacturing Company.
Accession Journal 1991.3107.06.
Currently not on view
Object Name
adding machine section
date made
Felt & Tarrant Manufacturing Company
Physical Description
metal (overall material)
plastic (overall material)
wood (overall material)
overall: 15 cm x 15.5 cm x 34.5 cm; 5 29/32 in x 6 3/32 in x 13 19/32 in
place made
United States: Illinois, Chicago
ID Number
accession number
catalog number
See more items in
Medicine and Science: Mathematics
Science & Mathematics
Adding Machines
Data Source
National Museum of American History, Kenneth E. Behring Center


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