Mechanical Wrench

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A wrench is a tool used to provide a mechanical advantage in applying torque to turn bolts, nuts, or other items designed to interface with a wrench.

Keywords

Rat, tool, spanner, wrench, ratchet, monkey wrench, adjustable wrench, shifting spanner

Galleries

Wrenches

Source

Government Printing Office The Official Gazette of the United States Patent Office (Washington, DC: Government Printing Office, 1895)

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