GD&T Tip - Use Two Datum References for Angularity!

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Use Two Datum References for Angularity - 1994, 2009, 2018 (#32)

(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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When setting up a part for the measurement of angularity on a sine bar, it is difficult to orient the part before performing the inspection. The part is free to rotate on the inspection surface, so even if it fails inspection once, it may pass when reoriented, making inspection time consuming.

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Back to Tips Tip added Nov 2020

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