Jig-boring machines are used for boring, drilling, counter-sinking, reaming, milling, and other types of finishing in individual and small-scale production during the manufacture of cutting and measuring tools, jigs, dies, and key components of machines and instruments. A jig grinder is a machine tool used for grinding complex shapes and holes where the highest degrees of accuracy and finish are required. The image describes an interesting machine that is both a jig boring and jig grinding machine that is manufactured by a German company, Deckel. It was installed in the Central Workshop in IIT Madras at the end of 1969. It was a highly accurate machine that was housed in a room maintained at +20C temperature. It could perform the tasks of boring and grinding of holes to an accuracy of 1 micron (0.0001 mm).