What is the accuracy of scanning laser gauge for objects of 10-50 mm diameter?
(a) ±0.15 μm
(b) ±0.25 μm
(c) ±0.35 μm
(d) ±0.45 μm
The question was posed to me in an internship interview.
This interesting question is from Laser Inspection in division Machine Vision Systems of Engineering Metrology