I have 2 circles that I scanned. I drew a line between the 2 and that is being used as my Datum. Can runout be measured using a line drawn between to circles? I was told that using cones makes it nearly impossible to get good runout data.
My part was approx 1.5feet tall and 3" in dia..had a bunch of runouts that were "G-H" on my print (the blue surfaces).
Datum -H- was kind of small so I only did two circles on it. But you get the idea.
Ray Harvey