Analog hygrometer CADRAN 17CM

Brass hair hygrometer with hanging ring, Series 17 DIMENSIONS AND WEIGHT: Dial / height: 165 / 70mm 581g Thickness of metal: 0.8mm CHARACTERISTICS : Colorless and baked varnsih Mineral glass Dial laser engraved and UV resistant SETTING UP: Adjustment screw on the back Annual calibration and verification by wrapping the unit in a damp cloth: after about 15 minutes and light tapping on the dial, the needle must indicate 95% 2 YEAR WARRANTY