Question

5.
What is positive zero error and negative zero error of vernier calipers ? How the
can be corrected ?

Answer 1

Answer:

positive zero error,multiply the coinciding division with the least count of vernier calipers. To calculate negative zero error,subtract the coinciding division from the total number of divisions on vernier scale and then multiply the difference by the least count.

Answer 2

Answer:

There are two types of zero errors –negative error and positive error. (i)Positive Error: When the two jaws are in contact and the zero of the vernierlies right to the zero of the main scale, the error is positive and the zerocorrection is negative.

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To calculate positive zero error,multiply the coinciding division with the least count of vernier calipers. To calculate negative zero error,subtract the coinciding division from the total number of divisions onvernier scale and then multiply the difference by the least count.