Question

For which diameter range of parts pneumatic gauges can be used?

(a) 50 to 500 mm

(b) 0.5 to 900 mm

(c) 50 to 700 mm

(d) 100 to 600 mm

I have been asked this question in examination.

The above asked question is from Pneumatic Comparators topic in chapter Comparators of Engineering Metrology

Answer 1

The correct answer is (b) 0.5 to 900 mm

Easiest explanation: Pneumatic gauge can be used for parts of diameter 0.5 mm to 900 mm having tolerance 0.05 mm or less. It can be easily used for on line measurement of parts.