1. Why should the focusing screw not disturbed after noting the reading X?
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screw drives is made of plastic material and not metal. ... When there is nothing between the two ends (studs) of screw gauge, 45th division of circular scale is coincide with screw guage, and in this situation zero of main scale is not
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screw drives is made of plastic material and not metal. ... When there is nothing between the two ends (studs) of screw gauge, 45th division of circular scale is coincide with screw guage, and in this situation zero of main scale is not
Explanation:
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