Question

Where should tolerance zone is placed for No-Go Gauges in present British System?

(a) Inside work limits

(b) Outside work limits

(c) Equal to work limits

(d) Regardless to work limits

I have been asked this question during an online interview.

My enquiry is from Gauge Wear topic in chapter Metrology of Screw Thread, Gauges for ISO Metric Screw Threads of Engineering Metrology

Answer 1

Right option is (b) Outside work limits

For explanation: The tolerance zone for the ‘No Go’ gauges should be placed outside the work-limits. In First System, inspection gauge tolerances fall outside the work tolerance and tolerance on No Go’ gauge should be one-tenth of work tolerance.