Surveyor's Transit
date: label: date made
content: 1872
name: label: maker
content: William J. Young and Sons
notes: label: Description
content: Wm. J. Young & Sons (fl. 1870-1881) used a simple transit instrument of this sort as their logo, placing it on their advertisements and on the front cover of their <i>Manual and Price List of Engineering and Mathematical Instruments</i>. The inscription on this example reads "Wm. J. Young & Sons 4648 Philadelphia." The serial number dates from 1872. The horizontal circle is silvered, graduated into 30 minutes of arc, and read by opposite verniers. One vernier reads to single minutes, and the other reads to 1/100 of a degree.
label: Location
content: Currently not on view
place: label: place made
content: United States: Pennsylvania, Philadelphia
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: Leigh E. Herman
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 1985.0800.01
label: accession number
content: 1985.0800
label: catalog number
content: 1985.0800.01
objectType: label: Object Name
content: surveyor's transit
physicalDescription: label: Measurements
content: overall: 11 in; 27.94 cm
label: Measurements
content: horizontal circle: 6 1/2 in; 16.51 cm
label: Measurements
content: needle: 5 in; 12.7 cm
label: Measurements
content: telescope: 11 1/4 in; 28.575 cm
label: Measurements
content: aperture: 1 7/8 in; 4.7625 cm
label: Measurements
content: overall in case: 13 1/4 in x 9 1/4 in x 12 7/8 in; 33.655 cm x 23.495 cm x 32.7025 cm