Question

Which of the following is true about probes used in automatic inspection machines?

(a) Retractable type

(b) Non-retractable type

(c) Auxiliary probe is not used

(d) Heads of probes are not held back till the part is in gauging position

The question was asked in exam.

This intriguing question comes from Automatic Inspection Machines topic in section Testing and Calibration of Gauges and Dynamic Measurement of Engineering Metrology

Answer 1

Correct choice is (a) Retractable type

Explanation: The probes should be made retractable type as far as possible, to prevent possible damage and wear to the probes. The probe heads are held back till the part is in a position of gauging.