Definition:Rusty Compass

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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

  • Results about rusty compass constructions can be found here.