Pencil Point Hook-Spring Bow
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A hook-spring with pencil point to draw circles.
Keywords
spring bow, spring bows, Hook-spring Bow with Bow Pencil, pencil bow hook-spring bow, pencil point hook-spring bow, Hook Spring bow with pencil pointGalleries
Mechanical Drawing ToolsSource
French, Thomas E A Manual of Engineering Drawing for Students and Draftsmen (New York, NY: McGraw-Hill, 1911)
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