Magnetometer
name: label: maker
content: Dover
notes: label: Description
content: This is a Kew pattern unifilar magnetometer that is marked "Dover, Charlton Kent No. 145" and that belonged to the Survey Branch of the U.S. Navy Hydrographic Office. While the "Dover, Charlton Kent" inscription was used between 1859 and 1920, the serial number suggests a date of around 1900. The U.S. Coast and Geodetic Survey repaired, cleaned, adjusted, and calibrated this instrument around 1950, and transferred it to the Smithsonian in 1959.
label: Description
content: <p>Ref: J. E. H. Gordon, <i>A Physical Treatise on Electricity and Magnetism</i> (London, 1880), vol. I, pp. 166-177.</p>
label: Location
content: Currently not on view
place: label: Place Made
content: United Kingdom: England, London, Charlton
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.316506
label: accession number
content: 225703
label: catalog number
content: 316506
objectType: label: Object Name
content: magnetometer
physicalDescription: label: Physical Description
content: wood (overall material)
label: Physical Description
content: metal (overall material)
label: Measurements
content: overall: 21 1/8 in x 11 1/4 in x 11 3/4 in; 53.721 cm x 28.575 cm x 29.845 cm
label: Measurements
content: overall; tube: 50 in x 1 1/4 in; 127 cm x 3.175 cm
label: Measurements
content: overall; box: 11 1/2 in x 21 1/4 in x 11 7/8 in; 29.21 cm x 53.975 cm x 30.1625 cm