Screw Clamp Small 320×206 Medium 640×411 Large 1024×658 Download TIFF Original 2913×1872 | (330.7 KB) Description A hand-screw clamp has two wooden jaws joined by a pair of opposite threaded screws that maintain a parallel orientation of the jaws when the screw handles are turned in the same direction. Keywords clamp, screw clamp, woodworker's clamp Galleries Clamps and Vices Source: Smith, Robert H. Book of Advanced Machine Work (Boston, MS: Industrial Education Book Company, 1919) 1317
