Invention and Engineering
An adjustable spanner (UK), also called a shifting spanner or shifter (Australia and New Zealand) or adjustable wrench (US and Canada), is any of various styles of spanner (wrench) with a movable jaw, allowing it to be used with different sizes of fastener head (nut, bolt, etc.) rather than just one fastener size, as with a conventional fixed spanner.
Chicago, Burlington and Quincy 4963.
Brooks-Scanlon Corporation 1.
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