applying significant digits to a geo tolerance in a feature control frame
If I have a feature control frame with regards to flatness, and the geometric tolerance is to .001", do you still apply significant digits to that number?
Ie. my mech insp. measures the part, and comes up with a flatness of .0013", is that within tolerance, because it is to 3 significant digits and .0013 rounds down to .001?
-Or- because it is in the box it is a drop dead number, maximum, so .0010000001" technically is out of tolerance?
I have read that the geometric tolerance is total, not a +/-, but this isn't really talking about that.
This has come up before at work, and we are still not exactly sure, so if you could point to where it mentions that in the standard, I would appreciate it. I am ok if it is a common knowledge thing too.
Thanks,
JimL