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This a microbalance in wood case with glass panels. The balance is brass; the pans are nickel; the indicator is ivory. The inscriptions on a small brass circle reads “G. P. KELLER / MAKER" and "SALT LAKE CITY / UTAH U.S.A.” There are three boxes of weights. One is marked "no. 175-B / WM. AINSWORTH & SONS / DEVER, COLO. U.S.A." One has a paper tag reading "E. O. Leonard."
George P. Keller was a German immigrant who established a firm in the Rocky Mountain area in response to the need for assay balances in the mining business.
Object Name
date made
around 1920
Keller, George P.
place made
United States: Utah, Salt Lake City
Associated Place
United States: New Jersey
Physical Description
glass (overall material)
wood (overall material)
overall: 34.3 cm x 13.9 cm x 15.8 cm; 13 1/2 in x 5 1/2 in x 6 1/4 in
ID Number
catalog number
accession number
Credit Line
Gift of June W. Leonard
Weights & Measures
See more items in
Medicine and Science: Chemistry
Data Source
National Museum of American History
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