I bought the bottle thermometer in the hope the child to be able (too hot not so) to offer the milk bottle faster and safer, but unfortunately I am disappointed because I have to wait 3 minutes until finally the device is ready with the knife. It takes far too long !!!! The level numbers also increase slowly and not by leaps and bounds as the thermometer. In principle, I can then organize also an alcohol thermometer out of the lab and measure so me. I would like to return !!!, It is not even as a wine thermometer.