Comptometer Model J
date: label: date made
content: 1935
name: label: maker
content: Felt & Tarrant Manufacturing Company
notes: label: Description
content: This key-driven adding machine had ten columns of color-coded green and white plastic keys. Complementary digits were indicated on the keys, and they were alternately concave (for odd digits) and flat (for even digits). Another key stem is at the back to the right of the number keys. In front of the keys is a row of ten subtraction levers. In front of these is a row of ten numbered decimal markers. In front of these are windows in the metal case that reveal 11 number dials, that indicate the result of addition.
label: Description
content: The machine is marked on the front top at the left: J329139. It is marked on the front: Comptometer. It is marked on a sticker on the left side: DEPARTMENT OF AGRICULTURE (/) 89699-BAE.
label: Description
content: This instrument came to the Smithsonian from the U.S. Department of Agriculture.
label: Description
content: Reference:
label: Description
content: Felt & Tarrant, Accession Journal 1991.3107.06
label: Location
content: Currently not on view
place: label: place made
content: United States: Illinois, Chicago
topic: label: Subject
content: Mathematics
setName: label: See more items in
content: Medicine and Science: Mathematics
label: See more items in
content: Adding Machines
label: See more items in
content: Science & Mathematics
creditLine: label: Credit Line
content: Transfer from US Department of Agriculture
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: MA.328128
label: maker number
content: J329139
label: catalog number
content: 328128
label: accession number
content: 270163
objectType: label: Object Name
content: adding machine
physicalDescription: label: Physical Description
content: wood (overall material)
label: Physical Description
content: metal (overall material)
label: Physical Description
content: plastic (overall material)
label: Measurements
content: overall: 14 cm x 27.5 cm x 37.5 cm; 5 1/2 in x 10 13/16 in x 14 3/4 in