Magnetometer

Description:

The Department of Terrestrial Magnetism of the Carnegie Institution of Washington designed this theodolite magnetometer around 1904, combining the best features of the U.S. Coast and Geodetic Survey magnetometer and that used by the Magnetic Survey of India. This example is marked "BAUSCH, LOMB, SAEGMULLER CO. Rochester, N.Y. 4594" and "C.I. MAGNETOMETER NO. 4." It was made in 1907 and, with tripod, cost $620.50.

Ref: J. A. Fleming, "Comparisons of Magnetic Observatory Standards by the Carnegie Institution of Washington," Terrestrial Magnetism 16 (1911): 61-84, on 62-63.

Bausch, Lomb, Saegmuller Co., Astronomical, Engineering and Other Instruments of Precision (Rochester, N.Y., 1907), pp. 41-43.

Carnegie Institution of Washington, Land Magnetic Observations, 1905-1910 (Washington, D.C., 1912).

Date Made: 1907

Maker: Bausch, Lomb, Saegmuller Co.

Location: Currently not on view

Place Made: United States: New York, Rochester

Subject: Science & Scientific InstrumentsScience & Scientific Instruments

Subject:

See more items in: Medicine and Science: Physical Sciences, Science & Mathematics, Measuring & Mapping

Exhibition:

Exhibition Location:

Credit Line: U.S. Department of Commerce, Coast & Geodetic Survey

Data Source: National Museum of American History

Id Number: PH.316516Accession Number: 225703Catalog Number: 316516

Object Name: magnetometer

Physical Description: metal (overall material)wood (overall material)Measurements: box: 25 in x 14 3/4 in x 8 in; 63.5 cm x 37.465 cm x 20.32 cmoverall; box: 8 in x 25 1/8 in x 14 3/4 in; 20.32 cm x 63.8175 cm x 37.465 cm

Guid: http://n2t.net/ark:/65665/ng49ca746a8-e422-704b-e053-15f76fa0b4fa

Record Id: nmah_1029279

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