Question

what is the principal of vernier caliper?? how many scales does vernier caliper have name them??

please help tomorrow exams are there. Give the complete answer. ​

Answer 1

Answer:

The vernier caliper works on the principle of using alignment of line segments displaced by a small amount to make fine measurements. Human eye can detect this alignment of lines which is the main fact that drives the vernier.

There are two scales on the caliper: main scale and the vernier scale. The main scale has normal resolution with least count of 1 mm. The vernier scale is attached in main scale and can slide on it and has graduations that are spaced by the same 1 mm only but are slightly displaced with respect to the marks on the main scale. The displacement is key here