Question

determine the lest count of vernier caliper if smallest division on main scale is 1mm and the number of divisions on vernier scale is 50

Answer 1

You can read the main scale to the nearest tenth of a centimeter. Thevernier consists of 50 divisions, meaning that 0.1 cm is divided into 50parts and the final least count is 0.1 cm/50 = 0.002 cm = 1/50 mm.