Q.

Which of the following is not true about metrology lasers used in laser inspection?

A. these are high-power instruments
B. used for rapid non-contact gauging of delicate parts
C. have low optical cross-talk
D. wide dynamic range
Answer» A. these are high-power instruments
Explanation: these are low-power instruments. laser systems have wide dynamic range, high contrast and low optical cross-talk. laser systems can be used in inspection of surfaces and in dimensional measurements and are very useful in precision and accuracy measurements.
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