Question

Which of the following is correct about micrometer?

(a) Plastic insulating grips are used on the frame

(b) Satin chrome finish increase the reading errors

(c) A uniform and maximum measuring force is applied

(d) Barrel is the removable part of the frame

I have been asked this question during an interview.

Enquiry is from Micrometers topic in section Linear Measurements of Engineering Metrology

Answer 1

Correct choice is (a) Plastic insulating grips are used on the frame

The explanation: Plastic insulated grips are employed on the frame to reduce heat transfer. Satin chrome finish minimize the reading errors and eliminate glare. A uniform and minimum measuring force should be applied to reduce error.