Fischer thermo-hygrometer for home use

Fischer thermometer and hygrometer. This is a precise, German-made product manufactured by the renowned Fischer company, which has been producing barometers, hygrometers, and thermometers for years. This small item combines the functions of a hygrometer and a thermometer, providing insight into the air humidity level and temperature of the home. Humans feel comfortable at temperatures between 18 and 22 degrees Celsius and at humidity levels between 35-65%. We must ensure the appropriate temperature and air humidity in the house, as these influence our health and well-being. Product information: Dimensions: 8.7 x 8.4 cmBrand: FischerMaterial: aluminum, brassBrass framehanger for wall mounting Humidity sensor - synthetic fiber, which, unlike the use of hair, guarantees excellent measuring accuracy without the need for device maintenance. Measuring accuracy: Hygrometer measuring accuracy: ± 5% relative humidity (20 ... 100%), +1 graduation markThermometer measuring accuracy: ± 1 K, +1 graduation mark It should be remembered that the air humidity measured by a hygrometer in the house corresponds only to the indoor humidity. Outside, there are large fluctuations in humidity throughout the day. It is important to operate the device in a suitable place, not too close to a heat source or in a draft. For the purpose of checking accuracy, the method of wrapping the device in a damp cloth is used. After about half an hour, the device will show the actual humidity with 95-98% accuracy. It is worth mentioning that Fischer hygrometers are recognized by, among others, archives and libraries, i.e., institutions where the conditions for storing documents or book collections are very strict.