Question

Up to which accuracy small gap gauges can be measured by using slip gauges?

(a) ± 0.001 mm

(b) ± 0.002 mm

(c) ± 0.003 mm

(d) ± 0.004 mm

The question was posed to me in unit test.

This is a very interesting question from Measurements of Limit Gauges in portion Testing and Calibration of Gauges and Dynamic Measurement of Engineering Metrology

Answer 1

Right choice is (a) ± 0.001 mm

To explain: Small gap gauges can be measured to an accuracy of ± 0.001 mm by using slip gauges and length bars but the accuracy of measurement of larger gap gauges is not so high, due to probable springing open of jaws when inserting the slip gauge combination.