100% Printed Drawing Compass

This is a fully printable drawing compass for use in drawing circles. While the classic use of a compass is in constructions(drawings in Geometry that use only a compass and straightedge), they have many other uses as well. In fact, a compass was used in designing this model. This compass consists of three main components, an axle, a slider and slotted track. There are two options for the slotted track: a short version about 12cm long in total, and a longer version about 16cm long.Assembly is relatively self explanatory although at may take a bit more force then you expect to push the lock ring down onto slider(the slider should be a little hard to move). If the slotted track has a hard time moving around the axle try oiling it; it works surprisingly well. Boost MeLike that this model doesn't have the insanely restrictive Standard Digital License?