I bought two of these hygrometers and equal noted that the indicated humidity of the two devices differed by about 5%. Having the equipment "regenerated" as described in the instructions they were the same, but still had a difference to my electronic meter of 5-10%. After I then adjusted the suits which now roughly but somehow I have confidence in the values are lost when the oak itself only He has the "precision hygrometer" roughly show the correct reading. Also, I've noticed that the measurement is relatively sluggish. When I cook my electronic beats Messa device immediately from strong but the hygrometer stir only after a few minutes a little.
Conclusion: Schick regarded but uncalibrated, it is sufficient only for a rough estimate from.
