Comptometer Educator
date: label: date made
content: ca 1955
name: label: maker
content: Felt & Tarrant Manufacturing Company
notes: label: Description
content: Careful study often indicated improved ways of using adding machines. For example, Comptometer operators were trained to use only the first five (lower) keys of a Comptometer. It was quicker to push a “4” key and a “5” key than to reach up and push a “9” key. This device assisted in training. It has a green plastic base with a 5x5 keyboard. The key stems and keyboard are metal, while the keys and base are plastic. The keys are alternately concave (odd digits) and flat (even digits). There is no mechanism. The device is marked: COMPTOMETER (/) EDUCATOR (/) A FELT AND TARRANT PRODUCT.
label: Description
content: Aprivately owned undated brochure for the Comptometer Educator uses some of the same photographs as a 1954 training manual for Comptometer operators, hence the date assigned. For the 1954 training manual, see 1994.3060.008.
label: Location
content: Currently not on view
place: label: place made
content: United States: Illinois, Chicago
topic: label: Subject
content: Mathematics
label: Subject
content: Women's History
setName: label: See more items in
content: Medicine and Science: Mathematics
label: See more items in
content: Women Teaching Math
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content: Adding Machines
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content: Science & Mathematics
creditLine: label: Credit Line
content: Gift of Myron R. Smith
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 1989.0325.05
label: catalog number
content: 1989.0325.05
label: accession number
content: 1989.0325
objectType: label: Object Name
content: adding machine training device
physicalDescription: label: Physical Description
content: metal (overall material)
label: Physical Description
content: plastic (overall material)
label: Measurements
content: overall: 10.5 cm x 14 cm x 17.3 cm; 4 1/8 in x 5 1/2 in x 6 13/16 in