Hydrometer
Hydrometer
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- Description
- Glass hydrometer with shot ballast, paper label marked “Actinometer 60° F.” and glass jar. An actinometer measures the intensity of radiation. In this form, designed for use by photographers, the scale indicates the number of grains of silver nitrate to an ounce of water at a particular light level.
- Location
- Currently not on view
- Object Name
- Hydrometer
- Physical Description
- glass (overall material)
- wood (overall material)
- Measurements
- overall: 14.6 cm; 5 3/4 in
- overall in case: 7 1/2 in x 2 in; 19.05 cm x 5.08 cm
- ID Number
- 1991.0691.45
- accession number
- 1991.0691
- catalog number
- 1991.0691.45
- Credit Line
- June W. Leonard
- See more items in
- Medicine and Science: Chemistry
- Data Source
- National Museum of American History
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