ASME vs ISO

[[To...]]

Attached is picture of how to interpret 2 inline datum features in ASME.  Does ISO or DIN interpret this in the same manner?  I assume a stepped cylinder set to Outer Tangential would do the trick.

Edited 2 hours ago

[[Ma...]]

I think new GD&T will do as picture shows.

At least on Inspect i was looking at ISO for ABC and it was doing tangential plane - only way i found that was when i applied deviations on surface while ISO and Geometry it was showing 0.063mm flatness because of one sprayed hill on that A plane.

So i assume you will be the safest if you use new GD&T and then compare it with you approach with alignment then datums to obtain same value.

[[To...]]

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I am working on a drawing from Germany and don't want to make any assumptions.  Plus, I am using 2019 so new GD&T is not an option. I just want to know how other standards interpret 

Edited 1 hour ago

[[Ma...]]

On 2019 i would use stepped cylinder with gauss settings.

I hope someone will pop up here soon i have to find info about datums.

[[To...]]

Why gauss?  I would outer tangential in ASME.

[[Ma...]]

OK so far as i found you will use tangential element - exception is usage of gauss for MMB.

So i would use that stepped cylinder with OT evaluation - don't forget filtering and so on 🙂