Two Gears from the Bush Diferential Analyzer

Two Gears from the Bush Diferential Analyzer

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These two steel spiral gears both have a brass cylinder down the middle. There are holes in the cylinders for a shaft. Dimensions are of each gear. First mark on one cylinder, written in pencil, reads: 300.
Parts of the Bush differential analyzer surviving at the Smithsonian have museum numbers MA.314824 and 1983.3002.01 through 1983.3002.89.
Currently not on view
Object Name
Differential Analyzer Components
date made
ca 1930
Bush, Vannevar
place made
United States: Massachusetts, Cambridge
Physical Description
steel (gears material)
brass (shaft material)
each: 1.8 cm x 4 cm x 4 cm; 23/32 in x 1 9/16 in x 1 9/16 in
ID Number
nonaccession number
catalog number
Credit Line
Gift of Wayne State University, College of Liberal Arts, Computation Laboratory
See more items in
Medicine and Science: Mathematics
Science & Mathematics
Mechanical Integrators and Analyzers
Data Source
National Museum of American History
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