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.”

Date Made: after 1908

Maker: H. J. Green

Location: Currently not on view

Place Made: United States: New York, Brooklyn

Subject: U.S. Weather Bureau

See more items in: Medicine and Science: Physical Sciences, Measuring & Mapping

Exhibition:

Exhibition Location:

Credit Line: United States Weather Bureau

Data Source: National Museum of American History

Id Number: PH.314528Catalog Number: 314528Accession Number: 204612

Object Name: hygrometer

Measurements: overall: 7 3/4 in x 6 in; 19.685 cm x 15.24 cm

Metadata Usage: CC0

Guid: http://n2t.net/ark:/65665/ng49ca746a9-fa49-704b-e053-15f76fa0b4fa

Record Id: nmah_1167497

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