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How correctness of taper can be checked?

How correctness of taper can be checked? Correct Answer Draw three lines of Persian blue at equidistant along the length

3 lines are drawn with Persian blue along the length on the plug gauge or spindle to test the taper. It is fitted in the gauge and rotated once or twice. If these marks of Persian blue are not rubbed evenly then the taper is not correct.

Related Questions

Which of the following option is correct for given statements about plug gauges for self-holding tapers? Statement 1: Plug is inserted with high pressure for checking taper. Statement 2: Morse taper is a type of self-holding taper.
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2. Counts, weights or volume are checked to tally with amounts of various items on the delivery note.
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4. Delivery note is checked with copy of the order placed.
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Full taper angle is also known as angle of taper.