Calculating Machine Components

Description
These objects were collected by Brooklyn high school teacher and historian of mathematics L. Leland Locke. The metal rings come in three sizes. Seventeen are .5 cm. in diameter (one of these has been cut), six are .8 cm. in diameter, and four are 1.3 cm. in diameter.
Location
Currently not on view
Physical Description
metal (overall material)
Measurements
overall: 2.7 cm x 1.1 cm x 1.1 cm; 1 1/16 in x 7/16 in x 7/16 in
ID Number
1983.3003.042
nonaccession number
1983.3003
catalog number
1983.3003.042
Credit Line
Gift of L. Leland Locke
subject
Mathematics
See more items in
Medicine and Science: Mathematics
Science & Mathematics
Calculating Machines
Data Source
National Museum of American History