Surveyor's Transit
date: label: date made
content: 1909
name: label: maker
content: W. & L. E. Gurley
notes: label: Description
content: W. & L. E. Gurley termed this a Surveyor's Transit with two verniers to the horizontal limb. The inscription on this example reads "W. & L. E. Gurley, Troy, N.Y. 9296." The horizontal circle is silvered, graduated every 30 minutes of arc, and read by opposite verniers to single minutes. There is a clamp and a tangent to the telescope axis. With tripod, this transit sold for $148. The serial number indicates that it was the 296th instrument that Gurley made in 1909.
label: Description
content: Ref: W. & L. E. Gurley, <i>Manual of the Principal Instruments used in American Engineering and Surveying</i> (Troy, N.Y., 1909), pp. 43-46 and 272.
label: Location
content: Currently not on view
place: label: place made
content: United States: New York, Troy
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: W. & L. E. Gurley. Manual of the Prinicipal Instruments Used in American Engineering and Surveying; 43rd Edition
creditLine: label: Credit Line
content: Ronald Mason Grimes
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: PH.318461
label: catalog number
content: 318461
label: accession number
content: 235075
objectType: label: Object Name
content: surveyor's transit
physicalDescription: label: Measurements
content: overall: 13 1/4 in; 33.655 cm
label: Measurements
content: horizontal circle: 8 in; 20.32 cm
label: Measurements
content: needle: 5 in; 12.7 cm
label: Measurements
content: telescope: 11 in; 27.94 cm
label: Measurements
content: hanging level: 6 1/4 in; 15.875 cm
label: Measurements
content: overall: 13 1/4 in x 7 7/8 in x 11 1/2 in; 33.655 cm x 20.0025 cm x 29.21 cm