Before using a micrometer screw gauge, you should:

  1. tighten it as hard as possible
  2. oil the scale
  3. heat it
  4. close the jaws gently and check for a zero error
Answer

D) close the jaws gently and check for a zero error

Zero reading check. SLO P-11-N-01 · Application

Physics MCQ · More Experimental Skills and Data Analysis MCQs · Practise