Very reliable Thermometer-hygrometer with reliable measured values for monitoring air humidity and temperature for a comfortable and healthy indoor climate Particularly suitable for use in living rooms and offices (not for the sauna). Ready to use - The device is factory calibrated and ready to use. Calibration screws are available for fine tuning. - Very high quality the entire case and the removable stand are made of high quality stainless steel and the quality aluminum dial is very carefully manufactured stainless, very robust, durable, decorative and provides an elegant touch. Convenient display - Humidity and temperature are displayed analogically and are easily readable on the large 12 cm display - Comfort zones are marked by color and indicate when aeration or increase in air humidity must be carried out. Durable unlike digital devices, the operation of this quality hygrometer is done without batteries or liquid substances, which protects our environment and saves you additional costs.