what is the principle of vernier calipers

The principle of the vernier caliper (or any vernier scale) is to divide a given distance into n and n+1 smaller distances, with each scale movable with respect to the other. Matching up the etched marks on each scale then gives a 1/n increment of additional accuracy in the measurement.

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(n-1)main scale divisions = n  vernier scale divisions

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hi frnd A6class

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