Sling Psychrometer
date: label: date made
content: 1890-1923
name: label: maker
content: H. J. Green
notes: label: Description
content: This instrument consists of two mercury-in-glass thermometers mounted on an aluminum frame that is marked "H. J. GREEN B'KLYN N.Y." and "No. 117 SIGNAL CORPS. U.S. ARMY" and equipped with a wooden handle. Each thermometer has a milk-white back and a clear front that is graduated every degree Fahrenheit. On one the scale runs from -37 to +127; on the other it runs from -32 to +128. It was made between 1890 (when Green moved his business to Brooklyn) and 1923 (when the psychrometer came to the Smithsonian).
label: Description
content: Ref.: Henry J. Green, <i>Meteorological and Scientific Instruments</i> (Brooklyn, about 1890), p.31.
label: Location
content: Currently not on view
place: label: place made
content: United States: New York, Brooklyn
setName: label: See more items in
content: Medicine and Science: Physical Sciences
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content: Military
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content: Thermometers and Hygrometers
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content: Measuring & Mapping
creditLine: label: Credit Line
content: U.S. Signal Corps
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: PH.308200.1
label: accession number
content: 70852
label: catalog number
content: 308200.1
objectType: label: Object Name
content: sling psychrometer
label: Object Name
content: Sling Psychrometer
physicalDescription: label: Measurements
content: overall: 17 7/8 in x 1 in x 1 1/4 in; 45.4025 cm x 2.54 cm x 3.175 cm