Question

In which of the following a limit step is present?

(a) Plain plug gauge

(b) Tanged plug gauge

(c) Plain ring gauge

(d) Tanged ring gauge

I got this question during an interview.

Question is taken from Plug and Ring Gauges for Self holding Tapers topic in portion Limits, Fits and Gauges of Engineering Metrology

Answer 1

Right answer is (d) Tanged ring gauge

To explain I would say: A limit step is present in the tanged ring gauge at the small end of the taper. It is used to verify shank length from the gauge plane and also to verify the combined effect of thickness of tang and its offsets.