Kesling Pocket Adder

Description
This white plastic stylus-operated non-printing adding machine has four adjacent wheels for entering numbers. It adds and subtracts. The machine comes with a white plastic stylus, a blue and clear plastic case, and a leaflet of instructions. It is marked on the back: KESLING POCKET ADDER (/) ST. LOUIS, MO. (/) PAT. NO. 2,450,668 (/) PAT. PENDING (/) MADE IN U.S.A. It is marked on the front: KES-ADD. Distributed by Hart Vance Company, St. Louis, Missouri.
Reference:
Elmer G. Kesling, “Calculator,” U.S. Patent 2,450,668, March 11, 1952.
Location
Currently not on view
date made
1948
patentee
Kesling, Elmer G.
place made
United States: Missouri, St. Louis
place patented
United States: Missouri, Bloomfield
Physical Description
plastic (overall material)
Measurements
overall: .1 cm x 13.7 cm x 5 cm; 1/32 in x 5 13/32 in x 1 31/32 in
ID Number
1994.0240.01
accession number
1994.0240
catalog number
1994.0240.01
Credit Line
Gift of Robert K. Otnes
subject
Mathematics
See more items in
Medicine and Science: Mathematics
Science & Mathematics
Adding Machines
Data Source
National Museum of American History, Kenneth E. Behring Center

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