Wing Dividers

Description
These brass and steel dividers are joined by a ball-shaped hinge. The steel pointed tips of each leg are approximately 3-1/2" long. The brass portions continue for nearly another 9". A brass arc, or wing, with a circumference of approximately 8-1/2", joins the legs. A butterfly screw allows the arc to be removed. A wing nut tightens the adjustable leg so that the dividers are set in position. On the outsides of the legs, below the two screws, the dividers are stamped with wheels that have six spokes and a small circle at the center. According to a note in the accession file, this mark represents the heraldic symbol of the city of Osnabrück, Germany.
Dividers are alternatively called (non-drawing) compasses, or Zirkel in German. Draftsmen used them to measure distances and to create circles. This pair was probably manufactured in the 18th century.
Reference: Maya Hambly, Drawing Instruments: 1580–1980 (London: Sotheby's Publications, 1988), 69–79.
Object Name
dividers
date made
1700s
Physical Description
brass (overall material)
steel (overall material)
Measurements
overall: 2 cm x 33 cm x 11.5 cm; 13/16 in x 13 in x 4 1/2 in
place made
Deutschland: Niedersachsen, Osnabrück
ID Number
MA*322756
accession number
248674
catalog number
322756
subject
Mathematics
Dividers
Science & Mathematics
Dividers and Compasses
Time and Navigation
See more items in
Medicine and Science: Mathematics
Dividers and Compasses
Time and Navigation
Exhibition
Time and Navigation, National Air and Space Museum
Data Source
National Museum of American History, Kenneth E. Behring Center
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