For our new I've bought a precaution for all living spaces jew. A hydrometer. Now after two successful test equipment I have a total of 9 technically identical TFA hydrometer (4x with aluminum frame / black housing 3x / 2x silver housing with frog motif). After acclimatization and half an hour in a damp towel (acc. Enclosed instructions) have now leveled all 9 units after about an hour. And what can I say: the Differnzen small Temparaturanzeigen are in 1-degree range, which the great humidity indicator in the 2 percent range! That's in this price range itself very well. After the easy fine adjustment (screw on the back), well then all measuring 99.9 / review immediately. The display is by their design also perfectly suited to in passing to look in perspective according to the state of things short times. What more do you want? Absolute recommendation!
