Vertical Circle
date: label: date made
content: 1840s
name: label: maker
content: Gambey, Henri Prudence
notes: label: Description
content: This is one of several Gambey instruments that the U. S. Coast Survey acquired in the mid-1840s. It is heavy, stable, and precise. The circle itself is silvered, finely graduated (probably to 5 minutes), and read by opposite verniers and magnifiers. The signature reads "Gambey a Paris." The "U S C & G S NO 21" inscription must have been added after 1878, when the Coast Survey became the Coast and Geodetic Survey.
label: Location
content: Currently not on view
place: label: place made
content: France: Île-de-France, Paris
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
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: PH.314631
label: accession number
content: 208213
label: catalog number
content: 314631
objectType: label: Object Name
content: vertical circle
physicalDescription: label: Measurements
content: telescope aperture: 1 1/4 in; 3.175 cm
label: Measurements
content: telescope: 12 in; 30.48 cm
label: Measurements
content: vertical circle: 6 in; 15.24 cm
label: Measurements
content: overall: 15 1/4 in x 10 15/16 in x 12 1/4 in; 38.735 cm x 27.78125 cm x 31.115 cm