Question

What is the main use of automatic gauge in selective assembly?

(a) Check accuracy of parts

(b) Check parallelism of parts

(c) Divide group of parts with some tolerance in smaller groups

(d) Use to check errors in parts

I had been asked this question in examination.

The above asked question is from Interchangeability topic in portion Limits, Fits and Gauges of Engineering Metrology

Answer 1

The correct answer is (c) Divide group of parts with some tolerance in smaller groups

The explanation: If parts to be assembled have normal tolerance of 0.01 mm then a gauge can be divided them into 10 different groups of 0.001 mm, this gauge is known as automatic gauge. It is for selective assembly of different parts.