If a conical tapered feature is a datum feature, do the angle and diameter(s) need to be defined with basic dimension, as opposed to a plus / minus angle angles and diameters? My thought is that it does because the datum feature simulator would collapse / expand as appropriate at the basic angle...
I am looking for input on how to specify flatness per unit length for longer pieces of shaft, 300+ mm in length. Pre 2009 we used straightness of a median plane and specified it per 30mm. Using the 2009 standard, we would use flatness and thus my question. Do I specify the length per inch...
