I have a combination convection/microwave oven. Whether being used with combination, or convection only, a large metal rack is used, so probably a thermometer probe would be tolerated as well. Since the whole thing is on a turntable, though, the probe would need to be wireless - transmit from a small included transmitter.
The trouble is that the only wireless units I have seen have a large - and possibly temperature-intolerant - associated transmitter unit. Does anyone know of a model which uses a button transmitter right on the probe?