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A wrench or spanner having a movable jaw.

Monkey-wrench

A wrench or spanner having a movable jaw.

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.

Mechanical Wrench Tool

A wrench or spanner is a tool used to provide grip and mechanical advantage in applying torque to turn…

"In order to get the best results from the tool the pressure on the handle should always be in the direction of the arrow shown above the latter, so as to put the pressure on the jaws at the points B and C, and not at D and E." —Grimshaw, 1902

Adjustable Wrench

"In order to get the best results from the tool the pressure on the handle should always be in the direction…

An adjustable wrench designed to fit hexagonal nuts with the adjusting screw built into the head of the wrench

Adjustable Wrench

An adjustable wrench designed to fit hexagonal nuts with the adjusting screw built into the head of…

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.

Mechanical Wrench

A wrench is a tool used to provide a mechanical advantage in applying torque to turn bolts, nuts, or…

The pipe wrench is an adjustable wrench used for turning soft iron pipes and fittings with a rounded surface. The design of the adjustable jaw allows it to rock in the frame, such that any forward pressure on the handle tends to pull the jaws tighter together

Pipe Wrench

The pipe wrench is an adjustable wrench used for turning soft iron pipes and fittings with a rounded…