Mechanical Wrench Tool Small 320×80 Medium 640×161 Large 1024×257 Download Tiff Original 2400×602 | (215.8 KB) Description A wrench or spanner is a tool used to provide grip and mechanical advantage in applying torque to turn objects usually rotary fasteners, such as nuts and bolts or keep them from turning. Keywords adjustable wrench, monkey wrench, spanner, tool, wrench Galleries Plumbing Tools Source: Government Printing Office The Official Gazette of the United States Patent Office (Washington, DC: Government Printing Office, 1895) Courtesy the private collection of Roy Winkelman
