To date, thermometers are absolutelyevery house. And recently, more and more popular was the installation of room devices that measure temperature. In addition, do not forget about mercury types of thermometers that measure the temperature of the human body. In general, the range of applications of these devices is very large. On the installation site, there are window, facade, water, room and even bath thermometers. Types of devices by composition and design are less extensive. In addition to the classic mercury, there are infrared and electronic.
Photo No. 1 shows us the standard windowthermometer, which is, probably, in every apartment. Its main advantage is high accuracy of measurement and a small price. However, due to the use of such a hazardous metal as mercury, it is very dangerous to use it at home. And in order not to provoke depressurization of the device, it is necessary to protect it from various mechanical damages. However, for outdoor thermometers it is not so important, as, for example, for household, measuring the temperature of the human body. As for the scale, window thermometers show temperatures from -50 to +50 degrees Celsius. They are usually installed on a window frame or on a glass. But that's not all devices.
Types of external (window) devices are notconfined to mercury thermometers. For example, an electronic device (indicated on the second photo) is very interesting. It has a small sensor, a wire and a liquid crystal display.
Types of such devices are most often targetedfor bathing small children. Parents use them to control the temperature of the water during bathing, which is especially important for newborns. The scale of such devices is designed for readings from +10 to +50 degrees Celsius. In this case, some water thermometers are supplied with a red mark on a scale of 37 degrees Celsius. This indicator is just the most optimal for bathing children.