I *believe* that when the AgieVision control came out (late 90's as I recall?), the 2-lead squaring block/system went away.
fwiw: On the Cut2000 I ran in recent years, there was a very simple fixture with a single thin ~25mm bore in it, and that bore was about 100mm above the Z plane. The machine would touch off on the bore, then move the U axis either side of center and touch off again, then move the V axis either side of center and touch off again. Then the routine would raise the head about 100mm higher and touch off again doing the same U and the V motion it did with the head lower.
And that's the end of it. It happens quite quickly, and the results cutting tall parts verified that it was dead-on.
I "believe" any AgieVision machine would do the same or something very similar.
PM
