Controller Calculating Machine Components

Description
These objects were collected by Brooklyn high school teacher and historian of mathematics L. Leland Locke. Both components have a steel shaft and a brass piece on the shaft with two notched wheels projecting from it. Dimensions are those of each object.
Like 1983.3003.20, but shorter.
Location
Currently not on view
maker
Controller Company
place made
United States: New York, New York
Physical Description
brass (overall material)
steel (overall material)
Measurements
overall: 3 cm x 9 cm x 3 cm; 1 3/16 in x 3 17/32 in x 1 3/16 in
ID Number
1983.3003.021
nonaccession number
1983.3003
catalog number
1983.3003.021
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