C-Clamp

A clamp is a fastening device used to hold or secure objects tightly together to prevent movement or separation through the application of inward pressure. A C-clamp, or G-clamp, is used to hold a wood or metal workpiece, and often used in, but are not limited to, carpentry and welding. G-clamp is used by means of turning the screw through the bottom of the frame until the desired state of pressure or release is reached.