Definition:Rusty Compass

Definition
A rusty compass is (despite what its name may make it seem) an ideal tool for drawing circles.

It differs from a normal compass in that, once it has been opened, it is too stiff and rusty to be changed.

Hence it can draw circles with only one radius.

Also known as
A rusty compass is also known as a fixed compass.

Also see

 * Definition:Compass
 * Definition:Compass and Straightedge Construction