Wrench facts for kids
In British English, spanner is the standard term. The most common shapes are called open-ended spanner and ring spanner. The term wrench is generally used for tools that turn non-fastening devices (e.g. tap wrench and pipe wrench), or may be used for a monkey wrench – an adjustable spanner.
What a wrench or spanner does is to grip. Pulling or pushing the handle to rotate gives mechanical advantage. It applies torque to turn objects – usually rotary fasteners, such as nuts and boltss – or keep them from turning.
An adjustable spanner, or adjustable wrench, or crescent wrench in American English, is a tool. It may move its jaw to rotate nuts or bolts of different sizes. It was invented by Edwin Beard Budding (1795–1846), who also invented the lawnmower.
Images for kids
Two wrenches, both nominal size 5/8", with a diagram superimposed to show the logic that allows them both to be labeled the same when their actual sizes are clearly different (across-flats distance vs screw diameter). The larger wrench in this photo is from the 1920s or earlier; its face was polished to allow the size stamp to be visible in the photograph.
Wrench Facts for Kids. Kiddle Encyclopedia.