The thermometer is intended for use on a frothing milk and there it served its purpose very well. In the green area at the Scala (60-70C) to milk can perfect lather and also create a good temperature for a cappuccino. From 80C burns from milk and the taste deteriorates. The thermometer can quickly incorrect movement times detached from the edge, and which can then nervous. But those who have learned it once, which can hereby produce the ideal foam and good milk espresso drinks. Theoretically, you can work with this device even with larger pots, but the clip-then no longer quite measure and therefore it should not even so exactly, roughly the works as well.