moriarty:
There are excellent classes out there. However, keep this
one thing in mind concerning True Position;
It is very easy to "over tolerance" a feature. Just as a
"rule of thumb", what ever you choose for a circular
tolerance zone value, divide it by two. This will be the
approximate +/- value. Is that acceptable?
I have seen some of the most ridiculous values used in True
Position feature control frames!