Aneroid Barometer
date: label: date made
content: ca 1900
notes: label: Description
content: Brass instrument, 3¼ inches diameter, with silvered dial marked “Improved Altitude Scale / Surveying Aneroid / Compensated” and “GEORGE E. BUTLER / SAN FRANCISCO” and “MADE IN ENGLAND” and “IMPD PAT / NO 7318.” The back of the case is marked “TRADE MARK LONDON.” There is also a leather case with strap.
label: Description
content: The circumference of the face has three scales reading from 0 to 15000 feet: one in 25 foot increments, one in 50 foot increments, and one in 100 foot increments. A pressure scale reads from 18 to 31 inches of mercury. A smaller scale at the bottom of the face reads the temperature from 30 to 130 degrees Fahrenheit.
label: Description
content: This instrument is based on a British patent for “An Improvement in Metallic Thermometers and Barometers” that was issued to Thomas Wheeler, of London, in 1894. It may have been made by F. Barker & Son, a London firm that that is known to have produced compasses and aneroid barometers. It was sold by George E. Butler, a jeweler in San Francisco in the early 20th century.
label: Location
content: Currently not on view
place: label: place made
content: United Kingdom: England, London
setName: label: See more items in
content: Medicine and Science: Physical Sciences
label: See more items in
content: Barometers
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content: Measuring & Mapping
creditLine: label: Credit Line
content: Doris Hoffman
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: PH.335617
label: catalog number
content: 335617
label: accession number
content: 1977.0058
objectType: label: Object Name
content: aneroid barometer
physicalDescription: label: Measurements
content: overall; barometer: 1 1/4 in x 3 1/8 in x 4 3/16 in; 3.175 cm x 7.9375 cm x 10.63625 cm
label: Measurements
content: overall; case: 1 5/8 in x 3 1/2 in x 4 1/4 in; 4.1275 cm x 8.89 cm x 10.795 cm