Geodetic Transit
name: label: maker
content: Troughton and Simms
notes: label: Description
content: This instrument marked "Troughton & Simms, London, 1849" and "U. S. C. S. No. 6" was made for the U. S. Coast Survey in 1849. It has a double-cone horizontal axis, two lamps for illuminating this axis, a large striding level, two small vertical circles attached to the telescope tube, and a solid iron base. By 1880, The Coast Survey had added the eccentric cam apparatus to the base to facilitate the reversal of the telescope.
label: Description
content: Ref: "Determination of Time by Means of the Transit Instrument," <i>United States Coast and Geodetic Survey Report</i> (1880): 205-227 and pl. 62.
label: Location
content: Currently not on view
place: label: place made
content: United Kingdom: England, London
setName: label: See more items in
content: Medicine and Science: Physical Sciences
label: See more items in
content: Surveying and Geodesy
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content: Measuring & Mapping
publisher: label: Related Publication
content: United States Coast and Geodetic Survey. United States Coast and Geodetic Survey Annual Report
creditLine: label: Credit Line
content: U. S. Coast and Geodetic Survey
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: PH.307210
label: accession number
content: 65983
label: catalog number
content: 307210
objectType: label: Object Name
content: Geodetic Transit
physicalDescription: label: Measurements
content: telescope: 46 in; 116.84 cm
label: Measurements
content: aperture: 3 in; 7.62 cm
label: Measurements
content: striding level: 26 in; 66.04 cm