Question

Which of the following option is correct for plug gauges, Plain?

(a) Have only one ring marked on the gauge plane

(b) Have only one ring indicates maximum depth

(c) Have two rings

(d) Have only one ring indicates minimum depth

The question was posed to me in an online quiz.

My enquiry is from Plug and Ring Gauges for Self holding Tapers in chapter Limits, Fits and Gauges of Engineering Metrology

Answer 1

The correct option is (c) Have two rings

The explanation is: These gauges have two rings. One ring is marked on the gauge plane. Another ring is used to indicate minimum depth of the taper or internal taper. These rings are also present in tanged plug gauges.