I have a question that maybe you fellow programmers could shed some light on. What I am working with is a Mitsubishi MVR40 gantry mill with a Fanuc 31i controller. What we are planning on doing is to use the probe and touch off on 29 spots on a ring surface to check it for surface height. We will want to compare the points and find the highest point and also the lowest point to make sure it doesn't excede a set value of .125". I know how to program the probe for the 29 touch off points and then apply those values to 29 different variables. Is there a fairly easy way to compare the 29 points or is it going to take a "bunch" of code lines to do all the IF THEN compares? I may have to rethink this but we are pretty well locked into finding this info out on this many points. Thanks in advance.