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When size is really important, throw away your NOGO pin gages (#12)

(In accordance with the ASME Y14.5-2018 standard)
(In accordance with the ASME Y14.5-2009 standard)
(In accordance with Y14.5M-1994 standard)

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According to Rule #1 of the National Standard, the least material size (largest internal feature or smallest external feature) of a feature of size should be verified at each cross section. NOGO pin gages do not detect form errors. If a hole, for instance, is out of round (which they usually are) a NOGO pin will not detect that some cross sections …

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Back to Tips Tip added May 1998