Circular saw. A saw having its teeth arranged around its circumference.
Clamp. A device for fastening or holding work together or to some other part.
Clearance. 1. The amount to which one piece clears or escapes another. 2. On a lathe tool, clearance is the amount to which the back face of the tool escapes the metal it is cutting.
Clements driver. A device for driving work in a lathe, and that places an equal strain on each end of the lathe dog or carrier.
Clutch. A device for engaging or disengaging so as to cause the motion of one piece to be communicated to another, or to stop such communication.
Cock. A device for opening or closing the bore of a pipe.
Cog. A wooden tooth for a gear wheel.
Collapsing-taps. A tap that is so formed that its teeth close inwards when the thread is cut so that the tap can be withdrawn without winding it backwards.
Collar. 1. A disc-shaped enlargement on a cylindrical piece. 2. A hollow cylindrical piece containing a set screw, to prevent a shaft from end motion.
Collet. A casing for holding tools or drawers in position.