Here’s what I just now got in the mail for a grand total of $11.23:
The thermocouple that is connected to the meter has insulation that can’t handle much heat, but the other two can.
The 3 wire sheathed T/C has, (I hope, because I haven’t opened the package yet) a separate ground. They both have one meter long leads. Over the years, I have bought a dozen of the yellow connectors, so I don’t have to change wiring to get other T/C’s to plug in.
I got these from the site I mentioned earlier. You have to click the “select” button on the item’seller page to see all the options.
No, I don’t know whether the sheaths are steel or SS. But you won’t go broke finding out.