Question

Which of the following are the types of mechanical bevel protractor?

(a) A, B only

(b) A, B, C and D only

(c) A, B, C, D and E only

(d) A, B and C only

I got this question in a job interview.

I'm obligated to ask this question of Vernier and Optical Bevel Protractor in section Angular Measurement and Circular Division of Engineering Metrology

Answer 1

Right option is (b) A, B, C and D only

The best I can explain: There are four types of mechanical bevel protractors i.e. A, B, C, and D. The vernier can read to 5 minutes of arc in A and B type of mechanical bevel protractor whereas in case of type C, the scale can be read in degrees.