Engineering and technology

What is spanner ? The spanner is a tool used to tighten or loosen the things which are hold by the fasteners like nut and bolt.   What are the types of spanners   1.Open ended spanner  2.Ring spanner  3. Adjustable spanner  4.Pipe wrench  5.Tubular spanner  6.Socket wrench  1.Open end wrench :-                                              In open end wrench the jaws are open and lean inward about 15°.and the jaws are unequal in size one of them is small and one is large the small jaw is known as locking jaw and it must be kept in the direction of application of force for better handling and grip. 2.Ring spanner:-                                      As name indicates this spanner has rings on both side of handling area and that rings has 8 to 12 internal notch and due to the notches the force applied on nut/bolt is evenly distributed over the nut/bolt head and it results in quicker work . 3.Adjustable spanner:-        In adjustable spanner there are two jaws one is fixed and rest on