French-Style Sector
date: label: date made
content: 18th century
notes: label: Description
content: The arms of this brass instrument have straight edges, but the hinge is decorated with a sunburst. One side has double scales of chords, running from 10 to 180; of architectural drawings, running from 5 to 60; and for the specific weights of four metals, marked with their symbols. The outer edge has a scale that runs from 1/4 to 64 and is labeled Calibres des Pieces. There is no maker's mark.
label: Description
content: The other side has double scales for equal parts, running from 0 to 200; for solids, running from 5 to 60; and for the lengths of the sides of inscribed regular polygons, from 12 sides to three sides. The outer edge has a scale running from 1/4 to 64 and labeled Poids des Boulets. The outside face of the instrument has scales for English feet and French feet, each running from 1 to 6. This instrument was found in Smithsonian storage in 1956.
label: Location
content: Currently not on view
place: label: place made
content: France: Île-de-France, Paris
topic: label: Subject
content: Mathematics
label: Subject
content: Sectors
label: Subject
content: Rule, Calculating
setName: label: See more items in
content: Medicine and Science: Mathematics
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content: Sectors
label: See more items in
content: Science & Mathematics
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: MA.314799
label: catalog number
content: 314799
label: accession number
content: 210147
objectType: label: Object Name
content: sector
physicalDescription: label: Physical Description
content: brass (overall material)
label: Measurements
content: overall: .3 cm x 17.5 cm x 3.2 cm; 1/8 in x 6 7/8 in x 1 1/4 in