Magnetometer
name: label: maker
content: Chasselon
notes: label: Description
content: This type of unusually small magnetometer was designed by Emile Brunner in Paris in the 1880s and widely used by the French Magnetic Survey. This example is marked "Chasselon Paris N<sup>o</sup> 42" and "USC & CS No. 21." It was made by Victor Chasselon around 1900, and belonged to the U.S. Coast and Geodetic Survey. After finding impurities in its brass, the Survey lent this instrument to the Carnegie Institution of Washington, and then to C. K. Edmunds, president of the Canton Christian College in China.
label: Description
content: Ref: E. Mascart, <i>Traité de Magnétism Terrestre</i> (Paris, 1900), pp. 211-214.
label: Description
content: Daniel Hazard, "Results of Magnetic Dip and Intensity Observations," <i>Report of the Superintendent of the United States Coast and Geodetic Survey Showing the Progress of the Work from July 1, 1901, to June 30, 1902</i>, Appendix No. 6, p. 350.
label: Description
content: Carnegie Institution of Washington. Department of Terrestrial Magnetism. <i>Land Magnetic Observations, 1905-1910</i> (Washington, D.C., 1912), p. 6.
label: Location
content: Currently not on view
place: label: Place Made
content: France: Île-de-France, Paris
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 Commerce, Coast & Geodetic Survey
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: PH.316507
label: accession number
content: 225703
label: catalog number
content: 316507
objectType: label: Object Name
content: magnetometer
physicalDescription: label: Physical Description
content: metal (overall material)
label: Measurements
content: overall: 10 in; 25.4 cm
label: Measurements
content: circle: 4 in; 10.16 cm
label: Measurements
content: overall: 10 in x 10 in x 7 1/2 in; 25.4 cm x 25.4 cm x 19.05 cm