Sighting Instrument
date: label: date made
content: 1775
name: label: Associated Name
content: Gourdin, Pierre
label: maker
content: Gourdin, Pierre
notes: label: Description
content: This unusual brass instrument, which may have been designed for determining the azimuth of the sun, has a brass plate with half circular hole; a radial arm with safety tube mounted on it; and a leather covered box. The "Gourdin au Quart de Cercle à Paris, 1775" inscription is that of Pierre Gourdin (fl. 1775-1801), an instrument maker who took over the premises previously occupied by Jean-Baptiste Nicholas Bion, son of the more famous Nicholas Bion.
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
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: PH.317356
label: catalog number
content: 317356
label: accession number
content: 230279
objectType: label: Object Name
content: semi-circle
label: Object Name
content: sighting instrument
physicalDescription: label: Measurements
content: box: 11 1/4 in x 7 5/8 in x 2 5/8 in; 28.575 cm x 19.3675 cm x 6.6675 cm
label: Measurements
content: instrument: 10 3/16 in x 6 1/2 in x 4 3/4 in; 25.87625 cm x 16.51 cm x 12.065 cm