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Perpendicularity of B Datum Hole to A Datum

Smasherofprobes
Hello everyone,

I am looking for some guidance on the best way to check perpendicularity of a B datum hole back to A datum. The material is 1.6mm thick and the only thing I can think of would be to measure the B datum at 2 or 3 different depths then construct a cylinder. Am I wrong in thinking this callout is a little silly? I'm grateful for any advice you guys can throw my way.


Thanks Slight smile

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  • I see this a lot too. Bogues callout to be honest, as Matt stated. Your perpendicularity will just be really good. Sunglasses

    Same here. Luckily this sort of silly callout always measures in tolerance. A shallow hole would have to be seriously crooked not to.

    However, I only work with machined parts. This callout on a pierced part would be a headache.
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  • I see this a lot too. Bogues callout to be honest, as Matt stated. Your perpendicularity will just be really good. Sunglasses

    Same here. Luckily this sort of silly callout always measures in tolerance. A shallow hole would have to be seriously crooked not to.

    However, I only work with machined parts. This callout on a pierced part would be a headache.
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