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
Object Name
adding machine
date made
1948
patentee
Kesling, Elmer G.
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
place made
United States: Missouri, St. Louis
place patented
United States: Missouri, Bloomfield
ID Number
1994.0240.01
accession number
1994.0240
catalog number
1994.0240.01
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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