C-Clamp(redirected from G clamp)
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a device for securing workpieces to a bench or template during fitting, joining, gluing, or assembly. C-clamps have a tightening screw passing through one end of a C-shaped frame made of metal or hard wood.
A steel clamp, shaped like the letter C; used to hold, under pressure, two materials placed between the top of the open end of the C and a flattened end of a screw shaft which is threaded through the other end of the C.