Marchant Model 10FA Calculating Machine

This full-keyboard, non-printing electric proportional gear calculating machine has a blue metal frame with a black carriage. It has ten columns of green and white all-plastic number keys. At the base of each column is a gray tabulator set key. These keys are numbered from 1 on the right to 10 on the left. Right of the number keys are division and stop keys, subtraction and addition bars, a non-shift key, a repeat key, a negative multiplication bar, and two carriage shift keys. In front of these are clearance keys for the tab set, the keyboard, and the dials. Right of these is a column of ten keys for automatic multiplication.
Above the number keys is a row of ten windows to show a number set up. Behind this register is a movable carriage with an 20-window result register and an 11-window revolution register. The registers on the carriage have reversible decimal markers. The motor is at the back of the machine, inside the case. There are four rubber feet.
A tag attached to the bottom of the machine reads: 10FA-321409; MARCHANT. A property tag on the back reads: SMITHSONIAN INSTITUTION (/) 85612. A black paper tag pasted to the bottom of the machine reads: Manufactured by (/) MARCHANT CALCULATING MACHINE COMPANY (/) OAKLAND, CALIFORNIA, U.S.A. It also reads (the last in a list of patents): 2502321. It also reads: Figuremaster.
The Marchant Model 10FA was introduced in 1948 and sold through 1950 (it is not on the GSA Price List for July, 1951-June, 1952). This example was used in the Division of Extractive Industries at what was then the Smtihsonian’s Museum of History and Technology.
SCM Collection.
Accession file.
Currently not on view
Object Name
calculating machine
date made
Marchant Calculating Machine Co.
Physical Description
plastic (overall material)
metal (overall material)
rubber (overall material)
overall: 22 cm x 41 cm x 42 cm; 8 21/32 in x 16 5/32 in x 16 17/32 in
place made
United States: California, Oakland
ID Number
maker number
catalog number
accession number
Science & Mathematics
Calculating Machines
See more items in
Medicine and Science: Mathematics
Calculating Machines
Data Source
National Museum of American History, Kenneth E. Behring Center
Additional Media

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