Comptometer Model K
date: label: date made
content: 1934
name: label: maker
content: Felt & Tarrant Manufacturing Company
notes: label: Description
content: This full keyboard non-printing adding machine has a brown metal frame and mechanism with plastic keys. The eight columns of color-coded green and white octagonal keys include nine keys in each column. Odd-numbered keys are concave, even-numbered ones flat. Complementary digits are indicated. A row of subtraction levers is below the number keys. Digits in the running total appear in a set of nine windows in front of the keys. A red button is to the right of the keyboard releases the keyboard afer a partial keystroke error has been corrected. A metal zeroing lever is on the right side. A rubber cord attaches to the back. The on/off switch is on the front at the top right.
label: Description
content: The machine is marked on the left corner of the top of the case: K350690. It is marked on the front and back sides: Comptometer.
label: Description
content: According to “Date of Manufacturing by Serial Number. . .,” Lewiston, Idaho: Office Machine Americana, 2002 (relying on the NOMDA “Blue Book” for May, 1975), Felt & Tarrant introduced the Model K with serial number 350000 in 1934.
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: Gift of Myron R. Smith
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 1989.0325.03
label: maker number
content: K350690
label: catalog number
content: 1989.0325.03
label: accession number
content: 1989.0325
objectType: label: Object Name
content: adding machine
physicalDescription: label: Physical Description
content: rubber (overall material)
label: Physical Description
content: plastic (overall material)
label: Physical Description
content: metal (overall material)
label: Measurements
content: overall: 14.8 cm x 25 cm x 32.2 cm; 5 13/16 in x 9 27/32 in x 12 11/16 in