I don't really think it is a "Thermostat" as it is the knob you see on the control panel thing with the red light on it. There are a set of contact point there, by adjusting the knob, the distance between the points vary, and the temp that it kicks on or off does too.
I know to keep it right on a certain temp, I need something that is in the oven, I guess that is what I'm looking for, something I'd wire into the circuit somehow, that would have a relay in it.......?
The pessimist complains about the wind; the optimist expects it to change; the realist adjusts the sails.
William Arthur Ward