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Hydrometer

Hydrometer

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Description
Glass hydrometer with shot ballast; the paper scale reads from 0 to 10, and is marked “R B W G” and “Gally, London.” Peter and Paul Gally were Italian craftsmen in England who made barometers, thermometers, and hydrometers, in the mid-nineteenth century.
Location
Currently not on view
Object Name
Hydrometer
Measurements
overall: 9 1/4 in; 23.495 cm
overall: 9 3/8 in x 1 1/2 in; 23.8125 cm x 3.81 cm
ID Number
PH.316454
catalog number
316454
accession number
223721
See more items in
Medicine and Science: Physical Sciences
Data Source
National Museum of American History
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