Question

What is the smallest size that can be measured by internal dial gauge?

(a) 5 to 10 mm in diameter

(b) 7 to 10 mm in diameter

(c) 11 to 18 mm in diameter

(d) 5 to 18 mm in diameter

I have been asked this question in an interview for job.

I need to ask this question from Indicators Gauges in chapter Dial Indicators and Indicating Gauges of Engineering Metrology

Answer 1

Right choice is (c) 11 to 18 mm in diameter

For explanation I would say: The contacts present in internal dial gauge are interchangeable having extension rods to broaden the measurement range. This instrument can check the smallest size of the order or 11 to 18 mm in diameter.