Invention and Engineering

Adjustable spanner

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.

Also on this shelf

See also

• ▸GCR Class 5
• ▸Alexander F. More
• ▸Arturo Salazar Valencia

Uncatalogued shelf

Text from Wikipedia; plate via Wikimedia Commons. Text CC BY-SA 4.0; plate freely licensed (see Commons). Source record. Images and catalogue data are reproduced from open-access collections.