Surveyor's Transit
name: label: maker
content: Keuffel & Esser Co.
notes: label: Description
content: Keuffel & Esser offered this distinctive form of instrument, with the twisted standards, from the early 1890s to around 1915. This example, which has a vertical arc extending over 160 degrees, was made around 1901, and belonged to the University of Montana. New, it cost about $220. The solar attachment, which allows the surveyor to determine the astronomical meridian, latitude, and time, cost an additional $50.
label: Description
content: The horizontal circle is read by opposite verniers to single minutes. The vertical arc is read by vernier to single minutes. There are clamps and tangent screws to the horizontal circle and to the telescope axis. The signature reads "KEUFFEL & ESSER CO. 5884 NEW YORK" and "PATENTED DEC. 3. 89. MAY 26. 91. OCT. 13. 91." The dates refer to patents granted to John Paoli.
label: Description
content: Ref: Keuffel & Esser, <i>Descriptive Price-List of Improved Surveying Instruments</i> (New York, 1893 ), pp. 11-13.
label: Location
content: Currently not on view
place: label: place made
content: United States: New York
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: Keuffel & Esser. Descriptive Price-List of Improved Surveying Instruments
creditLine: label: Credit Line
content: University of Montana, School of Forestry, Montana Forest and Conservation Experiment Station
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 1984.0636.09
label: catalog number
content: 1984.0636.09
label: accession number
content: 1984.0636
objectType: label: Object Name
content: transit
physicalDescription: label: Measurements
content: overall: 12 1/2 in; 31.75 cm
label: Measurements
content: horizontal circle: 6 1/2 in; 16.51 cm
label: Measurements
content: vertical arc: 5 in; 12.7 cm
label: Measurements
content: needle: 4 3/4 in; 12.065 cm
label: Measurements
content: telescope: 11 1/4 in; 28.575 cm
label: Measurements
content: hanging level: 5 in; 12.7 cm
label: Measurements
content: telescope solar attachment: 6 in; 15.24 cm
label: Measurements
content: overall: 16 in x 13 1/8 in x 8 7/8 in; 40.64 cm x 33.3375 cm x 22.5425 cm