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Moses G. Farmer (1820-1893) was an American inventor and electrical engineer who, in 1856, designed the first “electric gyroscope so as to run continuously at uniform speed.” This example came from the shop of Thomas Hall, a Boston instrument maker. It belonged to the American physicist and inventor, Amos E. Dolbear (1837-1910).
Ref: A. E. Dolbear, “Moses G. Farmer,” Proceedings of the American Academy of Arts and Sciences 29 (1893-1894): 415-418.
Prof. A. E. Dolbear, “Moses G. Farmer as an Electrical Pioneer,” Electricity 13 (Aug. 4, 1897): 56-58.
Currently not on view
Object Name
date made
ca 1860
Hall, Thomas
place made
United States: Massachusetts, Boston
overall: 7 in x 3 in x 3 1/2 in; 17.78 cm x 7.62 cm x 8.89 cm
overall: 6 3/4 in x 3 3/8 in x 4 in; 17.145 cm x 8.5725 cm x 10.16 cm
ID Number
catalog number
accession number
Credit Line
Gift of Mr. Benjamin L. Dolbear
Science & Scientific Instruments
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Medicine and Science: Physical Sciences
Data Source
National Museum of American History
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