Question

the vernier of circular scale is divided into 30 divisions,which coincide with 29 main scale divisions. if each main scale divisions is [1/2] degree what is the least count in minutes

Answer 1

Answer:

The vernier of a circular scale is divided into 30 divisons, which coincides with 29 main scale divisions. If each main scale division is (1/2)∘ the least count of the instrument is (1∘=60′).