Which jaws of the vernier calliper are used to find the internal diameter of a hollow cyclinder?

What is the use of a vernier calliper?

When a vernier calliper is used to measure external and internal diameters of an aluminium tube, the observations were made as follow: For external diameter: Main scale reading = 2.2 cm Vernier coinciding division = 4 and For inner diameter: Main scale reading = 1.8 cm Vernier coinciding division = 8

The diagram below shows part of the main scale and vernier scale of a vernier callipers, which is used to measure the diameter of a metal ball. Find the least count and the radius of the ball. .

The jaws of a vernier callipers touch the inner wall of calorimeter without any undue pressure. The position of zero of vernier scale on the main scale reads 3.48. The 6^(th) of vernier scale division is coinciding with any main scale division. Vernier constant of callipers is 0.01 cm. Find actual internal diameter of calorimeter, when it is observed that the vernier scale has a zero error of -0.03cm.

The internal jaws of a vernier calipers were held tightly inside a hollow tube when the zero of the vernier scale showed a reading of 1.9 cm and the 18th division on the vernier scale. The thickness of the wall of the tube is 1 mm. If M.S. D. = 1 mm and the number of division on the vernier scale is 20, find the outside diameter of the hallow tube.

In a vernier callipers having 10 Vsd the vernier constant is 0.1 mm When the jaws are closed zero of varnier lies to the left of zero of main and 7th Vsd coincides with scale division when a cylinder is placed between the jaws the main scale reading was 7.7 cm and vernier scale read 8 division What is the diameter of the cylinder ?

When the jaws of a vernier callipers are closed the 0th division of its vernier scale is to the right of the zero of the main scale and the V.S.D is 6 .Find the correction to be made to the observed measurement (take its least count as 0.1 mm)

When the two jaws of a vernier callipers are in touch, zero of vernier scale lies to the right of zero of main scale and coinciding with vernier division 3 . If vernier constant is 0.1 mm , the zero correction is

The length of a cylinder is measured with the help of a vernier callipers whose smallest division on the main scale is 0.5 mm and nine divisions of the main scale are equal to ten divisions of the vernier scale. It is observed that 78^("th") division of the main scale coincides with sixth division of the vernier callipers. Find the length of the cylinder.