bow pencil compass, drawing Physical Description metal (overall material) Measurements overall: 16 cm x 5.4 cm x 1.2 cm; 6 5/16 in x 2 1/8 in x 15/32 in place made Germany See more items in Medicine ...

The width of the compass is adjusted with a pin through the legs and a wheel around the pin between the legs. Additional thumbscrews allow adjusting of the needle and pencil points. The instrument ...

A speed square can replace a compass for drawing small circles, but a beam compass is the preferred tool for drawing large circles. Attach trammel points to a shop-made beam like a 1x1 piece of wood.