Universal Magnetometer with Dip Circle
date: label: Date made
content: 1912
name: label: maker
content: Carnegie Institution of Washington. Department of Terrestrial Magnetism
notes: label: Description
content: This instrument was designed and built by the Department of Terrestrial Magnetism of the Carnegie Institution of Washington in 1912. It incorporates an astronomical telescope and magnetometer for the determination of magnetic declination and horizontal intensity, and a dip circle with a Lloyd-Creak attachment for the determination of inclination and intensity. It is relatively light and easy to manipulate. It was used for a few years and then set aside when the universal magnetometer with earth inductor came into use. The inscription reads "D.T.M. C.I.W. N<sup>o</sup> 21."
label: Description
content: This instrument ended up in the hands of the U.S. Coast and Geodetic Survey, and that agency transferred it to the Smithsonian in 1959.
label: Description
content: Ref: J. A. Fleming, "Two New Types of Magnetometers Made by the Department of Terrestrial Magnetism of the Carnegie Institution of Washington," <i>Terrestrial Magnetism</i> 16 (1911): 1-12.
label: Description
content: Carnegie Institution of Washington. Department of Terrestrial Magnetism. <i>Land Magnetic Observations, 1911-1913</i> (Washington, D.C., 1915), pp. 7-9.
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
setName: label: See more items in
content: Medicine and Science: Physical Sciences
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content: Geomagnetism
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content: Science & Mathematics
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content: Measuring & Mapping
creditLine: label: Credit Line
content: U.S. Department of Commerce, Coast & Geodetic Survey
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: PH.316504
label: accession number
content: 225703
label: catalog number
content: 316504
objectType: label: Object Name
content: universal magnetometer with dip circle
physicalDescription: label: Physical Description
content: metal (overall material)
label: Physical Description
content: wood (overall material)
label: Measurements
content: overall: 19 3/4 in x 10 in x 10 3/4 in; 50.165 cm x 25.4 cm x 27.305 cm
label: Measurements
content: overall in case: 19 7/8 in x 10 3/4 in x 10 1/4 in; 50.4825 cm x 27.305 cm x 26.035 cm