Bow Pen
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Bow compasses should be used on all arcs and circles having a radius of less than 3/4 inch.
Galleries
CompassesSource
Kenison, Ervin Mechanical Drawing (Chicago, IL: American School of Correspondence, 1916)
Downloads
912×2400, 324.1 KiB
389×1024, 34.7 KiB
243×640, 17.8 KiB
121×320, 6.9 KiB