As an intermediate step before I leap straight to CNC with my grizzly green X3 I have been looking at a DRO.

I noticed some reference to laser triangulation in some other context and began to wonder if some form of fine triangulation would solve several of the problems that I could have with mounting a DRO.

Mount a couple of transmitters and receivers on the milling head then a single reflector on the table and it would seem that micron accuracy would be possible even on a round column mill.

Any thoughts?

Duke