Fortin et Hermann Hair Hygrometer

This is a brass instrument with a silvered scale marked "Fortin et Hermann, Genve. [?] à Paris" and "Humidité" (humidity) and "Secheresse" (dryness) Nicholas Fortin, the senior member of the firm, was an instrument maker well known for his improved mercury barometer. The U.S. Military Academy bought this example in 1829.
Object Name
hair hygrometer
date made
ca 1829
Fortin et Hermann
place made
France: Île-de-France, Paris
ID Number
catalog number
accession number
Measuring & Mapping
Thermometers and Hygrometers
See more items in
Medicine and Science: Physical Sciences
Thermometers and Hygrometers
Data Source
National Museum of American History, Kenneth E. Behring Center
Credit Line
U.S. Military Academy

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