Question

Which of the following is not true for fixed gauges?

(a) Independent of availability of power supply

(b) These are not expensive

(c) Chances of human errors are more

(d) Provide uniform reference standard

I got this question in examination.

My enquiry is from Plain Gauges topic in section Limits, Fits and Gauges of Engineering Metrology

Answer 1

The correct choice is (c) Chances of human errors are more

To elaborate: Fixed gauges are generally error free due to drift of the original adjustment, effect of variation of power, non-linear response etc. Human errors are almost nil except for careful handling. Auxiliary equipment and setups are not required.