- 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 a diameter of 6 cm, a height of 2 cm and a weight of 0,06 kg.
Tried to calibrate multiple times with salt in bag method . . . . . put it in, waited 24 hours, set to 75, put in humidor, wild readings within days. Repeated three times and gave up.