# What is Vernier constant?

## What is Vernier constant?

The vernier constant is the ratio of the smallest division of the main scale to the number of divisions present in a vernier scale.

Vernier constant is a term used in the measurement of length, particularly in instruments such as vernier calipers and micrometers. It is a dimensionless quantity that represents the value of the smallest division on the vernier scale in relation to the value of the main scale division.

The vernier scale is a secondary scale that slides along the main scale and is used to increase the resolution of the measurement. The vernier constant is the difference between the value of one main scale division and one vernier scale division.

For example, if the main scale has a value of 1 mm and the vernier scale has 10 divisions in that 1 mm, then each vernier scale division would have a value of 0.1 mm. Therefore, the vernier constant in this case would be 0.1 mm.

The vernier constant is used to make more precise measurements by allowing the user to interpolate between the divisions of the main scale. By reading the value on the main scale and the position of the vernier scale, the user can determine the value of the measurement with greater accuracy.

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