After we were annoyed by digital thermometers due to their slower measuring results and has also given up our digital spirit, we chose an analogue thermometer (with alcoholic solution to buy). Idea was that the accuracy of measurement would have to be very accurate, since it is well known, this measurement method for ages. After us the bottle warmer seemed as before, we have with other thermometers (both digital and analogue) measured it and lo and behold, there was every time a deviation between 3 and 5 (!) Degrees Celsius. Sorry, but in this case I can find out the temperature of baby milk with the hand test. That is similar to "exact". That this is the only function of the article, I can unfortunately no recommendation.
