Fitter Craftsmen are specialist mechanical engineering tradespersons. In heavy and medium engineering, even after of use of automatic machines with good accuracy, further machining or bench-work and fitting by hand are needed to finish the metal work to the desired accuracy and then assemble it with other parts. Fitters perform various operations on small metal pieces (eg. Mild Steel) like filing, marking, sawing, chipping, scraping, grinding, drilling, reaming, tapping and die-ing to remove metal, bring them to desired sizes and shapes, and then precisely be fitted in assembly using information of Fits and Tolerances. In this course, apart from Fitting, students are also taught the allied trades viz., Turning, Welding (Gas and Electric), Sheet Metal, Forging and Plumbing. A Fitter is involved in assembling and fitting parts and sub-assemblies that are made from metal and other materials to make production machinery working from specifications or detailed drawings using hand and machine tools and precision measuring instruments.