Practically our entire life consists of various physical quantities that appear in it even before our birth and are present until our death. We use them in almost every area of our lives, from daily cooking to personal creativity. Moreover, if we do not notice these quantities, this does not mean that they do not exist, and control and measuring instruments have been created to accurately determine them. Quite often, the use of such devices is a simple necessity, since our whole life consists of measures and weights, and their accurate knowledge can greatly simplify our existence and make it comfortable.
At present, the measuring tool can be divided into professional and household. Its accuracy, the quality of the measurements made and the error in the calculations depend on this. It is also worth noting that there is no universal instrument that could perform all existing measurements. For each individual value, its own system of notation, measures and definitions has been adopted. At the same time, for any value there are their own measuring instruments. And if for definitiondistance or weight requires a very simple device, then for such values as the level of radiation, the wavelength of a sound wave or the power of an engine, rather complex and accurate devices are needed. It is also worth noting that for the manufacture of one such instrument, other control devices and meters may be needed, and even to produce an ordinary school ruler, an existing pattern with printed dimensions is needed.
Destructive testing instruments deserve special attention. They take measurements at the moment of deformation or destruction of the object of measurement. With their help, resistance to tearing, compression, fracture, etc. is established. They also help to identify product defects in an entire batch by examining a single sample, although it will be destroyed.
Currently, household measuring instruments for measuring length, weight, temperature and time are considered the most common. They are in almost every home, they are used constantly, and not only our coziness and comfort, but also our he alth depends on their accuracy. We use a thermometer to measure the temperature outside. Use a thermometer to monitor your own body temperature. To measure the amount of food consumed - scales. To track time intervals - hours.
Thus, measuring tools have a direct impact on almost all areas of our lives. They allow us to explore the world around us and to know ourselves,providing the opportunity not only to monitor the situation, but also to change it, based on the preferred parameters obtained as a result of various measurements. Therefore, the importance of such instruments in the life of a modern person cannot be underestimated, and their testimony is sometimes so important that people's lives depend on them.
