Question

The least count of Vernier scale is__________________.

Answer 1

Vernier Calliper:

1. It is a measuring device that is used for the measurement of linear dimensions. It is also used to measure the diameters of round objects with the help of the measuring jaws.
2. Vernier calliper is more accurate because it is used for measuring up to one-hundredth of a millimeter and one-thousandth of an inch.

An illustrative diagram of a vernier calliper is shown below.

Vernier scale:

1. It is the smaller scale that is attached to the main scale and moves along with it.
2. The vernier scale moves in response to the opening of the jaws.
3. The vernier scale's primary function is to provide accuracy to the main scale reading by dividing it into smaller increments.
4. A metric calliper's vernier scale can be divided into up to $50$ increments, with each division measuring $0.02\mathrm{mm}$.
5. Thus, the least count of the Vernier scale is $0.02\mathrm{mm}$.