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Time to Stop the Nonsense - 1994, 2009 & 2018 (#7)

(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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If you don’t have opposed points (180+ degrees of arc), you cannot reproducibly find the center (axis) of a radius. Often a curved surface will be defined on a drawing by locating the center and specifying a radius. There is nothing wrong with this type of dimensioning. The problem is that traditionally these dimensions are toleranced …

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Back to Tips Tip added Dec 1997