Hair Hygrometer
Hair Hygrometer
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- Description
- Charles F. Marvin, a meteorologist who spent his career with the Army Signal Corps and its successor, the U.S. Weather Bureau, introduced this type of hygrometer in 1908. Unlike the original described by Horace Benedict de Saussure, of Geneva, in 1783, the Marvin instrument had two bundles of hair. The inscription on this example reads “PERCENTAGE OF SATURATION / (RELATIVE HUMIDITY) / HAIR HYGROMETER / No. 19 / U.S. WEATHER BUREAU / HENRY J. GREEN / B’KLYN, N.Y.”
- Location
- Currently not on view
- Object Name
- hygrometer
- date made
- after 1908
- maker
- H. J. Green
- place made
- United States: New York, Brooklyn
- Measurements
- overall: 7 3/4 in x 6 in; 19.685 cm x 15.24 cm
- ID Number
- PH.314528
- catalog number
- 314528
- accession number
- 204612
- Credit Line
- United States Weather Bureau
- subject
- U.S. Weather Bureau
- See more items in
- Medicine and Science: Physical Sciences
- Measuring & Mapping
- Data Source
- National Museum of American History
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