As an aside, I disagree with the idea this is bad GD&T, knowing nothing about the part. I can see that curved surface resting on another curved surface, with the rails being there to begin creating a flat base. Fuselage, for instance.
In a case like that, the surface is absolutely the correct primary.
As an aside, I disagree with the idea this is bad GD&T, knowing nothing about the part. I can see that curved surface resting on another curved surface, with the rails being there to begin creating a flat base. Fuselage, for instance.
In a case like that, the surface is absolutely the correct primary.
