Adjustable spanner

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Adjustable/crescent spanner/wrench
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Adjustable/crescent spanner/wrench

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.

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