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Which of the following types of comparators follows the non-contact measurement principle?
44. Which of the following types of comparators follows the non-contact measurement principle?
- Electrical comparators
- Digital comparators
- Pneumatic comparators
- Optical comparators
Answer
The correct answer is: D) Optical comparators
Explanation
In optical comparators, non-contact measurement principles are followed. They measure parts by projecting magnified images of them onto a screen without physically touching them.