Variometer
date: label: Date made
content: ca 1906
name: label: maker
content: Edelmann, Max Thomas
notes: label: Description
content: This instrument measures slight changes in the horizontal intensity of the earth's magnetic field. It is based on a design introduced by Hermann Ebert, a professor of physics in Munich, and Ebert tested it before it left Edelmann's shop. This example is marked "Physikalisch-mech. Institut. Von PROF. DR. TH. EDELMANN MÜNCHEN." The Department of Terrestrial Magnetism of the Carnegie Institution of Washington bought it for $94.69 in 1906.
label: Description
content: Ref: M. Th. Edelmann, "On the Construction of Earth-Magnetic Instruments," <i>Weather Bureau Bulletin</i> 11 (1893): 511-539.
label: Description
content: M. Th. Edelmann, <i>Catalogue</i> 26, item 300.
label: Location
content: Currently not on view
place: label: Place Made
content: Germany: Bavaria, Munich
topic: label: Subject
content: Science & Scientific Instruments
label: Subject
content: Science & Scientific Instruments
setName: label: See more items in
content: Medicine and Science: Physical Sciences
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content: Science & Mathematics
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content: Measuring & Mapping
creditLine: label: Credit Line
content: Carnegie Institution of Washington
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 1983.0039.06
label: accession number
content: 1983.0039
label: catalog number
content: 1983.0039.06
objectType: label: Object Name
content: variometer
physicalDescription: label: Physical Description
content: metal (overall material)
label: Measurements
content: overall: 42 in; 106.68 cm