Burroughs Style 7 Adding Machine

This is a full- keyboard printing manual adding machine. It has a black metal frame, a metal mechanism, glass sides, and a metal handle with a wooden knob. Each of the six columns of black and white plastic number keys has a red key at the top. The repeat and error keys are right of the number keys. The subtotal and total keys are to the left. There is no paper tape. The printing mechanism and paper tape are not visible to the operator. A collapsible metal stand is attached to the left side of the machine. The overall dimensions with the stand up are: 49 cm. w. x 37 cm. d. x 32.9 cm. h.
The machine is marked at the bottom of the front: STYLE No. 7. It is marked on a metal tag below this: No 7-66878. According to the donor, this machine was used in a grocery store in Hopewell, Virginia, in 1917 or earlier.
Accession file.
Currently not on view
Object Name
adding machine
date made
Burroughs Adding Machine Company
Physical Description
wood (overall material)
glass (overall material)
metal (overall material)
plastic (overall material)
overall: 32.9 cm x 26.5 cm x 37 cm; 12 15/16 in x 10 7/16 in x 14 9/16 in
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 Helen S. Levine

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