This functional thermometer made of powder-coated metal can be used both indoors and outdoors. By monitoring the indoor temperature, you can save heating costs—up to 6% with a one-degree temperature reduction—and simply feel more comfortable. When mounted outdoors, it provides the outside temperature as important information for your home, garden, leisure, and work. The two-color scale makes reading easier. The thermometer is completely manufactured in Germany. A 2-point calibration makes it particularly accurate. The capillaries are filled with a specially colored alcohol. Dangerous mercury has not been used for a long time.