Theodolite
name: label: maker
content: Patten, Richard
notes: label: Description
content: 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.
label: Description
content: Ref.: D. J. Warner, "Richard Patten (1792–1865)," <i>Rittenhouse</i> 6 (1992): 57–63.
label: Location
content: Currently not on view
place: label: place made
content: United States: New York, New York City
setName: label: See more items in
content: Medicine and Science: Physical Sciences
label: See more items in
content: Surveying and Geodesy
label: See more items in
content: Measuring & Mapping
creditLine: label: Credit Line
content: Millard Guy Smallwood
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: PH.329731
label: catalog number
content: 329731
label: accession number
content: 282354
objectType: label: Object Name
content: theodolite
physicalDescription: label: Measurements
content: overall: 12 1/2 in; 31.75 cm
label: Measurements
content: horizontal plate: 7 in; 17.78 cm
label: Measurements
content: vertical arc: 6 in; 15.24 cm
label: Measurements
content: needle: 4 in; 10.16 cm
label: Measurements
content: telescope: 13 1/2 in; 34.29 cm
label: Measurements
content: striding level: 5 in; 12.7 cm
label: Measurements
content: overall in case: 15 in x 8 7/8 in x 8 5/8 in; 38.1 cm x 22.5425 cm x 21.9075 cm