I'm not Fred, but I got my Thermometer at K-Mart. It's one of those Turkey cooker thermometer's that they stick through the lid to read the oil temp. Works pretty good. I have three thermometers in mine plus the PID. They are a little off from each other, but are close.
As for the oven door glass. If you go to a glass shop to get the tempered glass, it will cost you plenty. Try to find an oven and just take that one an use it. It's a whole lot less expensive.
