I looked at the sn04 inductive probe that somebody (over on RepRap.org I think) recommended. It is on eBay at a good price. But I didn't order it because it required 10v to 12v. Giving it power isn't the problem, but I was worried I would need level converter logic so I didn't fry the Arduino processor. I also started to get concerned that I really don't want inductive anyway. Capacitive might see the glass better. (And as a result of that realization, I changed the title on this thread too!)

I wonder how good the 'Repeatability' is on this sensor? Please come back after you get it working (of if you don't get it working!!!) and give us M48 numbers!

THANKS!