Well, it wasn't me buying , but my work sprung for this killer 3D edge finder. I drive a Haas VF-5 3 axis as well as a VF-2 5 axis. The problem is that the VF-5 is soo big you can't see a edge finder pop because the doors has to be closed and the spindle is 100 yards away, so I asked for this....
https://www.grainger.com/product/HAIMER-Dial-3D-Edge-Finder-Dial-444H64 and they got it for me
It is way cool! The doors is open because the spindle is not on and that big dial face rocks