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How the values of constants affect the accuracy of tools?

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How the values of constants affect the accuracy of tools?

(a) Decrease in accuracy will increase the value of constants

(b) Increase in accuracy will increase the value of constants

(c) Decrease in accuracy will reduce the value of constants

(d) Increase in accuracy will reduce the value of constants

I have been asked this question in a national level competition.

My question is based upon Tolerance for Screw Thread Gauges and Screw Threads topic in division Metrology of Screw Thread, Gauges for ISO Metric Screw Threads of Engineering Metrology

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Correct option is (d) Increase in accuracy will reduce the value of constants

Explanation: The value of these constants will depend upon the prevailing accuracy of tools and machines used to produce the screw threads. Increase in accuracy will reduce the value of constants. The specifications provide for three grades of fits, (a) close, (b) medium, (c) free.

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