Question

What is the total error in micrometer?

(a) Positive and negative deviation from the zero point

(b) Error in parallelism

(c) Deviation from measurement of a nominal dimension

(d) Maximum difference between ordinates of cumulative error

I had been asked this question in an interview for internship.

This interesting question is from Micrometers in portion Linear Measurements of Engineering Metrology

Answer 1

The correct choice is (d) Maximum difference between ordinates of cumulative error

To elaborate: Cumulative error is the deviation of measurement from a nominal dimension. It includes errors like thread errors, errors of measuring faces etc. Maximum difference between ordinates of cumulative error is the total error.