Calculate the least Count of Vernier Micrometer

Calculate the least Count of Vernier Micrometer Points : Calculate the least Count of Vernier Micrometer In Metric System, the cask is graduate in mm and 1/2mm for a length of 25mm and the rim of the thimble is divided in to 50 equal division: Thus into one complete revolution of thimble the spindle advance or opening will be 0.5 mm which is sub divided to 50 measuring to a minimum 0.01 mm which is call least count. For measuring higher quantity than 1 inch or 25 mm a micrometer of 1 inch to 2 inch or 25 mm at 50 mm are used and similarly more that 2 inch or 50 mm a micrometer of 2 inch to 3 inch or 5Omm to 75 mm are use and etc.