The Little Adding Wonder

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Description
This notched band adder has a wooden framework. Six paper bands move in six columns, showing the result in six windows. A paper sheet glued to the front has numerals and the name of the device, as well as cutouts to create the columns. A sheet glued to the back gives instructions. The columns widen at the top for carrying in addition and at the bottom for borrowing in subtraction. The object came to the Smithsonian from the collection of Felt and Tarrant Manufacturing Company. The date assigned is quite arbitrary.
Reference: P. Kidwell, “Adders Made and Used in the United States,” Rittenhouse, 1994, 8:78-96.
Location
Currently not on view
date made
ca 1925
distributor
Adding Wonder Manufacturers
maker
Adding Wonder Manufacturers
place made
United States: Washington, Spokane
place distributed
United States: Washington, Spokane
Physical Description
paper (overall material)
wood (overall material)
Measurements
overall: .6 cm x 8.6 cm x 20 cm; 1/4 in x 3 3/8 in x 7 7/8 in
ID Number
MA.323626
catalog number
323626
accession number
250163
Credit Line
Gift of Victor Comptometer Corporation
subject
Mathematics
See more items in
Medicine and Science: Mathematics
Science & Mathematics
Adder
Data Source
National Museum of American History, Kenneth E. Behring Center

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