Dietzgen 738C Bow Compass with Pen Point

This steel instrument has a needle point on one leg and a pen point on the other. A cross-hatched handle is attached to a ring, which in turn is attached to the legs. A screw goes through both legs, with the nut for setting the compass at a desired width outside the leg with the needle point. Additional thumbscrews allow adjusting of the needle and pen points.
The instrument appears to be a Champion Bow Pen, model number 738C, advertised in 1926 by the Eugene Dietzgen Company of Chicago. The leg with the needle point has handwriting: P M LARSEN. Engraved on the other leg is the word EXCELLO and the Dietzgen logo.
Reference: Catalog of Eugene Dietzgen Co., 12th ed. (Chicago, 1926), 59, 74.
Currently not on view
date made
ca 1926
Eugene Dietzgen Company
place made
United States: Illinois, Chicago
Physical Description
steel (overall material)
nickel silver (overall material)
overall: 11 cm x 4 cm x 1 cm; 4 11/32 in x 1 9/16 in x 13/32 in
ID Number
accession number
catalog number
Credit Line
Gift of William J. Ellenberger
Drawing Instruments
See more items in
Medicine and Science: Mathematics
Science & Mathematics
Dividers and Compasses
Data Source
National Museum of American History


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