The museum is open Fridays through Tuesdays 11 a.m. to 4 p.m. Free timed-entry passes are required. Review our latest visitor safety guidelines.

French-Style Sector

French-Style Sector

<< >>
Usage conditions apply
Downloads
Description
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.
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.
Location
Currently not on view
Object Name
sector
date made
18th century
place made
France: Île-de-France, Paris
Physical Description
brass (overall material)
Measurements
overall:.3 cm x 17.5 cm x 3.2 cm; 1/8 in x 6 7/8 in x 1 1/4 in
ID Number
MA.314799
catalog number
314799
accession number
210147
subject
Mathematics
Sectors
Rule, Calculating
See more items in
Medicine and Science: Mathematics
Science & Mathematics
Sectors
Data Source
National Museum of American History
Nominate this object for photography.   

Our collection database is a work in progress. We may update this record based on further research and review. Learn more about our approach to sharing our collection online.

If you would like to know how you can use content on this page, see the Smithsonian's Terms of Use. If you need to request an image for publication or other use, please visit Rights and Reproductions.

Comments

Add a comment about this object