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Torsion Balance

Torsion Balance

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This is a large Robervahl balance with the number 1148 embossed, twice, on the cast iron frame, and “TROEMNER PHILADELPHIA” inscribed in the center of the large flat copper pans. It was probably made in 1905, when the federal Assay Office in Denver became the Denver branch of the U.S. Mint.
Ref: “Balance Equipment of the Denver Mint,” Mining and Scientific Press 90 (1905): 42.
Currently not on view
Object Name
Object Type
date made
around 1905
place made
United States: Pennsylvania, Philadelphia
each pan: 3.8 cm x 33.5 cm; 1 1/2 in x 13 3/16 in
overall: 17.8 cm x 75 cm x 34.2 cm; 7 in x 29 1/2 in x 13 7/16 in
overall: 7 1/2 in x 13 in x 29 3/4 in; 19.05 cm x 33.02 cm x 75.565 cm
ID Number
catalog number
accession number
Credit Line
Transfer from Denver Mint
Weights & Measures
See more items in
Medicine and Science: Chemistry
Data Source
National Museum of American History
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