Keeping fluid at a constant temp

from: John
[Archived message]
subject: Keeping fluid at a constant temp / self regulating range???

hello,

i make goats cheese with my mom. for most recipes, you must keep the cheese at a constant temperature for a half an hour or more. this is really difficult on a range... we do have a thermometer with an alarm, and this helps a little, but we still must sit right next to the range and keep adjusting the temp or taking it off every few minutes, and we alwways end up over or under shooting the temp.

i was wondering if anyone had ever heard of a self regulating range or hot plate. I would imagine it would be sortof easy to have a thermometer that would tell the range/hot-plate the current temp, and the hotplate could automatically adjust to keep it within the limits.

just like a cruise control on a car.

has anyone ever heard of a product like this?

any other creative ideas for keeping something at a constant temp?

thanks,

john