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  1. The Fahj 122

    Perpendicularity to 3 datums

    Greetings all, I'm working on a part that has a perpendicularity callout referencing 3 datums. Datum -A- is a flat face, datum -B- is a hole perpendicular to -A- and datum -C- is also a hole on the same face as -B-. This seems incorrect how they have it called out. I understand they are...

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