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Hair Hygrometer

Hair Hygrometer

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The inscriptions on this hair hygrometer read "U.S. WEATHER / BUREAU / No. 22" and 'H.J. GREEN B'KLYN, N.Y." This instrument was probably designed by Charles F. Marvin, a meteorologist who became Chief of the Weather Bureau in 1913.
Currently not on view
Object Name
Hair Hygrometer
date made
early 20th century
Green, Henry J.
place made
United States: New York, Brooklyn
overall: 12 in x 4 in x 3 in; 30.48 cm x 10.16 cm x 7.62 cm
overall: 12 1/4 in x 5 1/2 in x 3 in; 31.115 cm x 13.97 cm x 7.62 cm
ID Number
catalog number
accession number
Credit Line
U.S. Weather Bureau
Science & Scientific Instruments
See more items in
Medicine and Science: Physical Sciences
Data Source
National Museum of American History
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