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Answer: In order to take an accurate measurement reading between two graduation markings on a linear scale using mechanical interpolation it is used to minimise human estimating error. This increases resolution and lowers measurement uncertainty.
The vernier constant is another name for the vernier calipers’ lowest count. The distance between a main scale division and a vernier scale division is how it is defined.
It is specified mathematically as:
VC=1MSD-1VSD
The least count of a vernier caliper is: when the main scale has (n-1) divisions and there are n divisions on the vernier scale:
LC= 1-n-1n MSD
