While I'm a long term member (and a vendor sponsor) on the 'castboolits' forum,
I'm new here.
I make two products for casting.
A PID controller for electric lead pots, specifically the LEE melters, although the device works just as well on other brands too. They just don't see as much advantage from it's use as the LEEs do.
I make the same controller in a DIY Kit form as well.
The device controls temp to ~ 1ºF, and while this is not needed to cast bullets succesfully, once you use one, you won't want to Not use it ever again.
It is a plug n play set up, plug your pot into the device, turn your lead pot's temperature control to 'MAX', put the sensor into the melt and set the desired temperature. When a green lite comes on you can start casting.