Question

how can we find and correct zero error in a screw gauge?​

Answer 1

Calculating zero error in screw guage - definition

Calculating zero error in screw guage - definitionPositive zero-error correction is done by subtracting the positive zero-error from the actual reading. Case (c): Negative zero-error of 4 circular scale division. Negative zero-error correction is done by adding the negative zero-error from the actual reading.

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Answer 2

Explanation:

Calculating zero error in screw guage - definition

Positive zero-error correction is done by subtracting the positive zero-error from the actual reading. Case (c): Negative zero-error of 4 circular scale division. Negative zero-error correction is done by adding the negative zero-error from the actual reading.