Comptometer Model C, Light
date: label: date made
content: 1912
name: label: maker
content: Felt & Tarrant Manufacturing Company
notes: label: Description
content: This full-keyboard non-printing adding machine has a gray-brown metal case and sits on a rectangular wooden base. There are eight columns of black and white color-coded plastic keys, with complementary numbers indicated on the keys. Keys for odd digits are concave, and those for even digits are flat. At the front of the machine are eight subtraction levers and eight decimal markers, as well as nine windows that reveal the totals shown on numeral wheels below. The zeroing handle is on the side.
label: Description
content: The machine is marked on the left front with serial number: 47412. A metal tag behind the keys has several patent dates, the most recent being: SEP. 19. 11.
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 Felt & Tarrant Manufacturing Company
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: MA.273037
label: accession number
content: 54245
label: maker number
content: 47413
label: catalog number
content: 273037
objectType: label: Object Name
content: adding machine
physicalDescription: label: Physical Description
content: metal (overall material)
label: Physical Description
content: wood (overall material)
label: Physical Description
content: plastic (overall material)
label: Measurements
content: overall: 17 cm x 25 cm x 38.8 cm; 6 11/16 in x 9 27/32 in x 15 9/32 in