You must be referring to the elaborate key leveling set-up that was demonstrated at some conventions a number of years ago? It had a micrometer set up, and could also do key dip. The problem with the system, in my estimation, is that it wasn't "quick" at all. I knew the project was doomed when I talked with the gentleman and he bragged that with his system he could get key leveling down to 4 hours!Key levelling is like tuning - there are degrees of resolution that are appropriate, and anything beyond that can be a waste of time. If the keys are basically on a straight plane, and they FEEL level, they ARE level. Using your fingers is ultimately the best gauge, because that is what the pianists feel and it keeps you in the real world. It's also a good idea to incorporate key levelling into your everyday service because it benefits from touch up from time to time as balance rail bushings wear and balance rail punchings compress.
As far as the self tuning piano goes - I wonder that too! The gentleman was Don Gilmore and I just checked and he still has a website and it looks like he has continued to develop the product, although he doesn't talk prices on his website. It's a fascinating concept and it looks like he may now be using some sort of induction method of heating the strings, whereas his original prototype I believe ran electrical current through the wires, which created a number of complications.I'd sure love to see a demonstration of the current version - I wonder if it can match a good solid regular tuning?