This isn't a PC-DMIS question but I thought someone here might know the answer. What is the logic behind having a Ø called out at 20.0mm with a -.007 / -.04 tolerance. Why not just make the Ø19.993 +0 / -.033?
Ivy League engineering that's why. We had one engineering intern from Northwestern University. According to her, they have to take 1 GD&T class but 5 humanities classes to graduate.