Question

What is the colour of the band at ‘no go’ side of plain gauges?

(a) Red

(b) Blue

(c) Green

(d) Yellow

The question was posed to me in an internship interview.

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

Answer 1

The correct answer is (a) Red

To explain: To identify which end of the gauge is ‘No Go’ or ‘Go’ end, sometimes ‘No Go’ side is painted with red colour. Otherwise, the work ‘Go’ and ‘No Go’ are written on the handle of ‘Go’ and ‘No Go’ side respectively.