the way they make it a performance cam is they grind down the heel portion rendering the pointier portion effectively taller, giving you extra meat at the top to increase duration, and also making the fatter portion move up as well to enable a faster lift to be ground into the lobe. Each regrind reduces the base circle somewhat. The actual shape is slightly different for each performance characteristic. Like to open the valve faster/slower, keep the valve open for more, or less time. to overlap the other valve in that cylinder more or less. Most of it you would not really be able to check with a dial indicator, other than uniformity with the other lobes, unless you had the full list of where it should be at what degree from TDC or wherever they start from. I suppose you could get the full specifications from the cam manufacturer, but generally you just get lift, duration, lobe separation, overlap. How exactly they get there is kind of a trade secret.
