R. Patten Theodolite

Description
This theodolite, marked "R. Patten N. York," dates from the period 1813–1833, when Richard Patten was in business in New York. The horizontal circle and vertical arc are graduated every 30 minutes, and read by verniers to 2 minutes. The compass on English instruments of this sort reads clockwise; here it reads counterclockwise. The number '6' in a diamond engraved on the baseplate may be a serial number.
Ref.: D. J. Warner, "Richard Patten (1792–1865)," Rittenhouse 6 (1992): 57–63.
Location
Currently not on view
Object Name
theodolite
maker
Patten, Richard
Measurements
overall: 12 1/2 in; 31.75 cm
horizontal plate: 7 in; 17.78 cm
vertical arc: 6 in; 15.24 cm
needle: 4 in; 10.16 cm
telescope: 13 1/2 in; 34.29 cm
striding level: 5 in; 12.7 cm
place made
United States: New York, New York
ID Number
PH*329731
catalog number
329731
accession number
282354
See more items in
Medicine and Science: Physical Sciences
Measuring & Mapping
Surveying and Geodesy
Data Source
National Museum of American History, Kenneth E. Behring Center

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