Quite a useful little thermometer, but only if used with care, and you understand the legends, which are in German! Care is needed as the thermometer takes quite a long time - best part of a minute - to adjust to an accurate temperature. If the bath temperature is wrong, you cannot monitor the temperature as you add more hot or cold, because the thermometer won't keep up. You have to guess as to how much water to add, and then wait to see if you are right. But after waiting, it is then very helpful at confirming the correct temperature.