Question

How much extra thickness is added to tang thickness in tanged plug gauge?

(a) 0.1 mm

(b) 0.05 mm

(c) 0.01 mm

(d) 0.5 mm

The question was posed to me during an online interview.

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

Answer 1

The correct option is (c) 0.01 mm

To explain I would say: 0.01 mm is added to the tank thickness to allow for the tang eccentricity of the plug gauge itself.  Tanged plug gauges are used to verify internal tapers in machine sockets or tools and also to ensure that tang will be accepted by tang slot.