Controller Calculating Machine Components

Controller Calculating Machine Components

These three round steel shafts were collected by Brooklyn high school teacher and historian of mathematics L. Leland Locke. One carries a stepped drum and all have other components on them. The dimensions given are those of each object.
Compare objects1983.3003.19 and 311943.
Currently not on view
Object Name
calculating machine components
Controller Company
place made
United States: New York, New York City
Physical Description
metal (overall material)
overall: 2.5 cm x 25.5 cm x 2.5 cm; 31/32 in x 10 1/32 in x 31/32 in
ID Number
nonaccession number
catalog number
Credit Line
Gift of L. Leland Locke
See more items in
Medicine and Science: Mathematics
Science & Mathematics
Calculating Machines
Data Source
National Museum of American History

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