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2. Adjustable spanner - Wikipedia

   en.wikipedia.org/wiki/Adjustable_spanner

   An adjustable spanner (UK and most other English-speaking countries), also called a shifting spanner (Australia and New Zealand) [1] or adjustable wrench (US and Canada), [a] 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.

3. Johan Petter Johansson - Wikipedia

   en.wikipedia.org/wiki/Johan_Petter_Johansson

   Johan Petter Johansson (December 12, 1853 – August 25, 1943), sometimes known as JP, was a Swedish inventor and industrialist.He invented a modern adjustable spanner [1] (patents in 1891 and 11 May 1892).

4. Wrench size - Wikipedia

   en.wikipedia.org/wiki/Wrench_size

   spanner (wrench) size and thread diameter of a hex nut. Width across flats is the distance between two parallel surfaces on the head of a screw or bolt, or a nut, mostly for torque transmission by positive locking. The term width across flats (AF) is used for the following forms: 2-socket = round material with two surfaces

5. Wrench - Wikipedia

   en.wikipedia.org/wiki/Wrench

   A set of metric spanners or wrenches, open at one end and box/ring at the other. These are commonly known as “combination” spanners. 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.

6. Pipe wrench - Wikipedia

   en.wikipedia.org/wiki/Pipe_wrench

   A pipe wrench is any of several types of wrench that are designed to turn threaded pipe and pipe fittings for assembly (tightening) or disassembly (loosening). The Stillson wrench, or Stillson-pattern wrench, is the usual form of pipe wrench, especially in the US. The Stillson name is that of the original patent holder, who licensed the design ...

7. Crescent (brand) - Wikipedia

   en.wikipedia.org/wiki/Crescent_(brand)

   Crescent is a brand of hand tools.It originated with the Crescent Tool Company, founded in 1907.The Crescent brand has changed ownership multiple times. It is currently owned by Apex Tool Group, LLC of Sparks, Maryland as part of its Hand Tools division.