Stima Adding machine

This handheld instrument has nine parallel brass rods with holes in them. The holes in each rod are numbered from 1 to 9. Numbers are entered by pulling down rods with a stylus. The total appears in a set of nine holes at the bottom of the instrument. A lever on the side may be set so that a number entered is recorded in another set of nine holes that are immediately below the columns. The machine also has a carry mechanism; a white plastic zeroing button that is pulled out to zero the result register; a brown plastic button that is pushed to zero the entry register; a white plastic button used for subtraction; and decimal markers. Instructions are stored with the object and its leather-covered velvet-lined case. The stylus is missing.
Ernst Martin, Die Rechenmaschinen, second edition, p. 454.
Currently not on view
Object Name
adding machine
date made
Steinmann, Albert
Physical Description
leather (overall material)
brass (overall material)
aluminum (?) (overall material)
plastic (overall material)
velvet (overall material)
overall: 4 cm x 14 cm x 17.5 cm; 1 9/16 in x 5 1/2 in x 6 7/8 in
place made
Schweiz: Neuchâtel, La Chaux-de-Fonds
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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