In this Question Line video, Jason answers the following questions regarding reporting size dimensions with a CMM:
- When reporting against a plus/minus size tolerance of a hole or shaft, what actual value do you put on an inspection report? Is it the UAME? I have had issues with CMMs reporting an average size, passing the part off as good but then it not fitting correctly.
- Is the concept the same when reporting against a plus/minus length tolerance?
Jason first briefly explains Rule #1 of GD&T before diving into the criteria needed in order to accept or reject a feature of size. He also discusses manual vs CMM inspection and the reporting requirements of the ASME Y14.45 standard (Measurement Data Reporting standard).
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