Hydrometer
Hydrometer
Previous
Next
Usage conditions apply
- Description
- Glass hydrometer with mercury ballast, and paper label marked “Pat. Appl'd For PER CENT OF PROOF SPIRITS TP. 60° F. AMERICAN INSTRUMENT CO. WASHINGTON, D.C.” and in red ink “2631” and “1935.”
- Ref: George K. Porter, “Hydrometer,” U.S. Patent 2,195,339 (March 26, 1940), assigned to American Instrument Co.
- Location
- Currently not on view
- Object Name
- hydrometer
- maker
- American Instrument Company
- place made
- United States: District of Columbia, Washington
- Measurements
- overall: 10 in x 1 in; 25.4 cm x 2.54 cm
- overall: 10 in x 1 1/8 in; 25.4 cm x 2.8575 cm
- ID Number
- PH.327005
- catalog number
- 327005
- accession number
- 267815
- See more items in
- Medicine and Science: Physical Sciences
- Data Source
- National Museum of American History
Nominate this object for photography.
Our collection database is a work in progress. We may update this record based on further research and review. Learn more about our approach to sharing our collection online.
If you would like to know how you can use content on this page, see the Smithsonian's Terms of Use. If you need to request an image for publication or other use, please visit Rights and Reproductions.
