<p>The Adjustable Wrench or spanner is a spanner variant with one movable jaw and the other jaw being fixed. Mostly, the lower jaw of the Adjustable Wrench in Chennai plumber&rsquo;s hand will be the moving piece. This design allows the wrench to be used with different sizes of nut and bolt rather than just one size. There are different forms of adjustable spanners - many of them are&nbsp;<a href="https://en.wikipedia.org/wiki/Screw_thread">screw</a>-adjusted, others use&nbsp;<a href="https://en.wikipedia.org/wiki/Lever">levers</a>, and some others used&nbsp;<a href="https://en.wikipedia.org/wiki/Wedge">wedges</a>.</p>
<p>When the Adjustable Wrench in Chennai workman&rsquo;s hand is used, the fixed jaw will withstand bending stress much better than the movable jaw. This is because the movable jaw is supported only by the flat surfaces on either side of the guide slot, and not the full thickness of the tool. To reduce the bending stress on the lower jaw, the wrench is usually angled to allow the movable jaw&apos;s area of contact closer to the body of the tool.</p>
<p>The Johansson Adjustable Wrench design is widely known in the 21st century. It is an improved version of the Clyburn type, developed in 1891&ndash;1892. In the American continent, this type is often known as a Crescent wrench as the design was patented by the Crescent Tool Company. But the original design has a British origin before it was improved and popularized in Scandinavia by the Bahco or Johansson improvement. In Australia it is sometimes referred to as a &quot;shifting spanner&quot; or its abbreviated form of &quot;shifter&quot;.&nbsp;<a href="https://en.wikipedia.org/wiki/Monkey_wrench">Monkey wrenches</a> are another type of adjustable wrench in Chennai store with a long history. It is now clear how the hand tool got its name, but it is believed to have a British origin with a fancied resemblance of the wrench&apos;s jaws to that of a monkey&apos;s face. Another popular type of adjustable wrench has four-sided hexagonal base and jaws particularly suited for hexagonal nuts and hexagonal headed&nbsp;<a href="https://en.wikipedia.org/wiki/List_of_screw_drives#Hex">cap screws</a> and bolts.</p>