Question

How much deviation is permitted in parallelism of centres axis w.r.t. guideways for 125-160 mm center height?

(a) 0.01 mm/200 mm

(b) 0.01 mm/300 mm

(c) 0.1 mm/300 mm

(d) 0.001 mm/300 mm

This question was addressed to me by my school teacher while I was bunking the class.

I want to ask this question from Bench Centres topic in division Linear Measurements of Engineering Metrology

Answer 1

The correct option is (b) 0.01 mm/300 mm

Explanation: This permissible deviation in parallelism is specified by IS: 1980-1978.