Geodetic Transit
name: label: maker
content: Jones, Thomas
notes: label: Description
content: This transit instrument inscribed "Thos Jones Liverpool" and “U.S.C.S. No. 12" is one of the earliest extant instruments of the U. S. Coast Survey. The Thomas Jones who worked as an instrument maker and dealer in Liverpool during the period 1816–1831 should not be confused with the Thomas Jones of London who made the transit theodolite for the Coast Survey, which is also in the collections.
label: Description
content: The vertical circle attached to one end of the slightly conical horizontal axis is graduated to 15 minutes, and read by opposite verniers to single minutes. At the other end of the axis is a wooden lamp holder. The lattice work cast iron base has 3 leveling feet.
label: Description
content: Ref: Gloria Clifton, <i>Directory of British Scientific Instrument Makers 1550–1851</i> (London, 1995), p. 154.
label: Location
content: Currently not on view
place: label: place made
content: United Kingdom: England, Liverpool
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: Clifton, Gloria and Gerard L. E. Turner. Directory of British Scientific Instrument Makers 1550-1851
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: PH.316521
label: accession number
content: 225703
label: catalog number
content: 316521
objectType: label: Object Name
content: geodetic transit
physicalDescription: label: Measurements
content: telescope: 20 in; 50.8 cm
label: Measurements
content: vertical circle: 6 in; 15.24 cm
label: Measurements
content: overall: 22 5/8 in x 15 in x 17 in; 57.4675 cm x 38.1 cm x 43.18 cm