Question

Which of the following is incorrect about angle plates?

(a) Plates are given heat treatment after being finished

(b) Angle plates can be used for inspection purposes

(c) Box squares can be used instead of angle plates

(d) Surfaces of angle plates are scraped

This question was posed to me in a job interview.

Asked question is from Angle Plates topic in division Linear Measurements of Engineering Metrology

Answer 1

Right option is (a) Plates are given heat treatment after being finished

Explanation: Heat treatment is given to the angle plates before being finished to relieve internal stresses. Angle plates are widely used for inspection purposes. Surface of angle plates are scraped to give them a smooth finish and flatness.