I know that some big industry uses something on a long pole that they can stick into those big assed furnaces. Or a sensor on the end of a pole with the wire wrapped in non-conductive insulated material poked in the middle. Who knows, there are some smart engineer dudes on here that could figure it our. The bottom line, how much is it going to cost and is it really worth it? :D

You can make a thermocouple any length you want.

I told you someone could figure it out.

Paging 9th Engineer - paging 9th Engineer

Like Bruce said.
As far as turning him over I would use a rotisserie.

An I-beam welded to two cement mixers?

Look, I'm (essentially) a vegetarian so I don't really know much about this stuff. I understand that meat should be 'hung' for a period to ensure it tastes good (the thought horrifies me!) but surely 65-million year old T-Rex rump would be a little rancid by now.

Likewise any Bronto-Burgers.

just toss some molasses on it, should be good to go.