Question

name the part of the vernier calipers which is used to measure internal diameter of the tube

Answer 1

1. outside jaws

2. inside jaws

3. strip

Answer 2

On a vernier caliper, if you look at the jaws, and they reach a point when the caliper is fully closed, both inside and outside, that is, the long and the short jaws both come together with the scale at zero.