Surveyor's Transit
date: label: date made
content: after 1885
name: label: maker
content: Kolesch and Company
notes: label: Description
content: Instrument with a "Kolesch & Co. New York. 1796" inscription. The firm termed it an Engineer's Transit, No. 7650. The horizontal circle is graduated every 20 minutes, and is read by opposite verniers with celluloid reflectors to 30 seconds. There is a clamp and tangent to the telescope. New, it cost $160.
label: Description
content: Heinrich Adolph Kolesch (1855-1903) was a German immigrant who began in business in 1885, taking over the firm that had been founded by E. & G. W. Blunt. Kolesch & Co. was still using the Blunt dividing engine in 1925. The firm was incorporated in New York State in 1904, and dissolved in 1947.
label: Description
content: Ref: Kolesch & Co., <i>Illustrated Catalogue and Price-List</i> (New York, 1913), pp. 228-229 for this type of instrument, and pp. 195 and 198 for the history of the firm.
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
publisher: label: Related Publication
content: Kolesch & Co.. Illustrated Catalogue and Price-List
creditLine: label: Credit Line
content: Mack R. McClure
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 1989.0409.01
label: accession number
content: 1989.0409
label: catalog number
content: 1989.0409.01
objectType: label: Object Name
content: Surveyor's Transit
physicalDescription: label: Measurements
content: overall: 12 1/4 in; 31.115 cm
label: Measurements
content: horizontal circle: 6 in; 15.24 cm
label: Measurements
content: needle: 4 1/2 in; 11.43 cm
label: Measurements
content: telescope: 10 1/4 in; 26.035 cm
label: Measurements
content: hanging level: 5 in; 12.7 cm
label: Measurements
content: overall in case: 14 5/8 in x 11 1/2 in x 9 1/4 in; 37.1475 cm x 29.21 cm x 23.495 cm