Bow Compass


This steel-spring instrument has a metal and ivory handle, with a ridged ring around the bottom and the top shaped like a pawn chess piece. A holder with a metal adjusting screw on one leg is missing its needle point. This leg is marked with the number 8 inside a circle and an arrow pointing left (toward the 8). The holder on the other leg has a pencil lead and is adjusted with a brass screw. The distance between the legs is adjusted with a metal screw and brass nut. This object does not resemble the ivory-handled bow-pencils sold around the turn of the 20th century by Keuffel & Esser, Dietzgen, Gurley, Kern, or Schoenner.

Date Made: ca 1900

Location: Currently not on view

Subject: MathematicsDrawing Instruments


See more items in: Medicine and Science: Mathematics, Science & Mathematics, Dividers and Compasses


Exhibition Location:

Credit Line: Gift of Eunice L. Hoffman

Data Source: National Museum of American History

Id Number: MA.335342Accession Number: 305958Catalog Number: 335342

Object Name: bow pencilcompass, drawing

Physical Description: steel (overall material)ivory (overall material)brass (overall material)Measurements: overall: 9.2 cm x 2.5 cm x 1.8 cm; 3 5/8 in x 31/32 in x 23/32 in


Record Id: nmah_904322

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