Westphal Specific Gravity Balance

Westphal Specific Gravity Balance

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Usage conditions apply
A Westphal balance was designed to measure the buoyancy of an object by weighing that object in air and then in water. The form was devised by a German pharmacist, Karl Friedrich Mohr, and improved by Georg Westphal (1836-1902), a balance and philosophical apparatus maker in Celle. This example was used by Dr. Jacques Loeb at the Rockefeller Institute for Medical Research in New York City.
Currently not on view
Object Name
Specific Gravity Balance
Object Type
Other Terms
Physical Description
wood (overall material)
glass (overall material)
metal (overall material)
overall: 3 in x 9 in x 6 1/2 in; 7.62 cm x 22.86 cm x 16.51 cm
ID Number
catalog number
accession number
catalog number
Credit Line
Gift of Rockefeller Institute through Dr. Detlev W. Bronk, President
Weights & Measures
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Medicine and Science: Medicine
Data Source
National Museum of American History
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