Universal Magnetometer with Earth Inductor
date: label: Date made
content: 1914
name: label: maker
content: Carnegie Institution of Washington. Department of Terrestrial Magnetism
notes: label: Description
content: This instrument was designed and produced by the Department of Terrestrial Magnetism of the Carnegie Institution of Washington. Unlike the Carnegie's original universal magnetometer, this one is equipped with an earth inductor to determine dip. It is marked "DEPARTMENT TERRESTRIAL MAGNETISM Carnegie Institution of Washington E.I. - M. No. 28." It was completed in 1914 and used in many locations around the world. The U.S. Coast and Geodetic Survey used it in South and Central America in the early 1940s. The U.S. Geological Survey acquired it in 1973, when that agency took charge of the federal program in geomagnetism, and transferred it to the Smithsonian in 1982.
label: Description
content: Ref: J. A. Fleming and J. A. Widner, "Description of the C.I.W. Combined Magnetometer and Earth Inductor," <i>Terrestrial Magnetism</i> 18 (1913): 105-110.
label: Description
content: Carnegie Institution of Washington. Department of Terrestrial Magnetism. <i>Land Magnetic Observations, 1911-1913</i> (Washington, D.C., 1915), pp. 9-12.
label: Description
content: U. S. Coast and Geodetic Survey, <i>Magnetic Observations in the American Republics 1941-44</i> (Washington, D.C., 1946), p. 16.
label: Location
content: Currently not on view
place: label: Place Made
content: United States: District of Columbia, Washington
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: U.S. Department of the Interior, U.S. Geological Survey
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 1982.0671.07
label: accession number
content: 1982.0671
label: catalog number
content: 1982.0671.07
objectType: label: Object Name
content: magnetometer
physicalDescription: label: Physical Description
content: metal (overall material)
label: Measurements
content: overall: wt. 37.5 g
label: Measurements
content: overall: 7 1/4 in x 21 1/2 in x 15 1/2 in; 18.415 cm x 54.61 cm x 39.37 cm