That is Why you build a simple tool setter base probe. You simply probe down and touch off on the Probe base it sets to Zero then probe all the rest of the tools.

IF you look in the Mach tool box section there is a simple routine there that does just that. It uses stock Screen resources so you do NOT have to mod a screen . You just need to add in a button code to a button that is not used.

There is NOTHING wrong with the way you do it (;-) As long as it suites you.

(;-) TP