Johnston Adding Machine, Model A11
date: label: date made
content: ca 1956
name: label: maker
content: Johnston Adding Machine Company
notes: label: Description
content: This gray mechanical 10-key adding machine was manufactured by Johnston Adding Machine Company of California. It is a model A11 Adder with 10 white number keys and 6 red function keys. The machine could add, subtract, and multiply as well as print a paper tape. Its cover is hinged and opens to reveal the calculating mechanisms, the ribbon and platen for printing, and a red knob for advancing the printing paper. Stamped on a metal plate located on the inside right rear is the serial # 11766A11.
label: Description
content: Johnston Adding Machine Company was acquired by the Marchant Calculating Machine Company in 1957. The Johnston plant was engaged to produce and distribute the Marchant 10-key adding machine.
label: Description
content: See also: 1979.3084.128 Advertisement for Marchant's new adding machine.
label: Description
content: 1979.3084.023 - .025 Marchant Board of Directors Minutes of Meetings.
label: Location
content: Currently not on view
topic: label: Subject
content: Mathematics
setName: label: See more items in
content: Medicine and Science: Mathematics
label: See more items in
content: Science & Mathematics
creditLine: label: Credit Line
content: Ernest Eldon Jorgenson
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 2017.0315.01
label: model number
content: A11
label: accession number
content: 2017.0315
label: catalog number
content: 2017.0315.01
objectType: label: Object Name
content: adding machine
physicalDescription: label: Physical Description
content: metal (overall material)
label: Physical Description
content: plastic (overall, keys material)
label: Measurements
content: overall: 19.5 cm x 22.5 cm x 35.5 cm; 7 11/16 in x 8 27/32 in x 13 31/32 in