Question

What is the importance of a vernier scale?

Answer 1

Vernier caliper is an instrument used for measuring small lengths of solid objects where an ordinary scale cannot be applied. We can measure the length accurately up to the order of 10^-2 cm, 10^-3 cm depending upon the vernier used. Therefore a vernier caliper is important to measure the fraction of the smallest division of a measuring scale which otherwise could not be done by the judgment of the eye.