Adorini brand product Precision synthetic hair Range: 20-90 % rel. humidity Analogue Optimized by manufacturer for highest accuracy at 65-75% rel. humidity Pre-calibrated The Adorini Hairhygrometer has an installation diameter of 3.9 cm, diameter (outside) of 4.5 cm and a height of 2.2 cm.
S**S
One of the best non electrical available
one of the finest non-adjustable hydrometers available
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