I have been cooking/heating water, testing my new stove. I have a need to monitor the pot temp on the 40 quart pot. I made a floating thermometer with a piece of wood and a hole and a dial thermometer. It works OK but I would like to have a sanitary NSF floating thermometer but I cant find one. I goggled and eBayed with no luck. Did I discover an unfulfilled need? Anyone have an approved floating thermometer for hot water not oil but that would be nice also.