Object Details
maker
Felt & Tarrant Manufacturing Company
Description
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.
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.
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.
Location
Currently not on view
Credit Line
Gift of Myron R. Smith
date made
1934
ID Number
1989.0325.03
maker number
K350690
catalog number
1989.0325.03
accession number
1989.0325
Object Name
adding machine
Physical Description
rubber (overall material)
plastic (overall material)
metal (overall material)
Measurements
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
place made
United States: Illinois, Chicago
See more items in
Medicine and Science: Mathematics
Adding Machines
Science & Mathematics
Data Source
National Museum of American History
Subject
Mathematics
Link to Original Record
Record ID
nmah_690483