Machinery has advanced human lives since ancient days. Similarly, by the digitization of analog machinery, technology became an inseparable part of daily activities. Besides the numerous advantages, the use of technology brings new problems. For instance, calibration of the machines is one of the important problems. The importance of the reasonable quality of measurements is recognized by researchers and developed specific methods for calibration. Also, numerical analysis is used as a shortcut in engineering applications. For example, partial differential equations without solutions can be approximated.