56) If the large diameters of the tapered job is 30 mm and smaller diameter of the tapered job is 26 mm. The length of the tapered job is 100 mm and total length of the job is 200 mm. Then the Tail stock offset required during taper turning in lathe is

57) Colour code for Bins for metal waste segregation is

58) The other name of crossing file is

59) The key which has a rectangular cross-section and it fits into the keyway cut on both the shaft and the hub is

60) The hammer which is developed for forging larger volumes of work and too big to handle in size is