There are some similar questions in other threads, but I don't seem to be able to get any of the solution to work.  I have a part with a small cross-section and a large diameter.  A cropped sectional view is therefore the best way to show the part's features.  Creating the view is no problem, but dimensioning the diameters has me stumped.  Can someone please give me a step-by-step on how to do this?