This article deals with verification of radar sensors. Although these are very accurate devices, they are vulnerable to distortion of the measured value due to false reflections. Since this is an assigned measure, it must be ensured that results are fixed and reproducible. This places the onus on geometric and environmental optimalization to minimize false reflections and deliver accurate measurements.

This article is treating the increase of hardness of different types of steals used for firearm manufacturing, using nitriding of steel in nitriding oven. The article evaluates hardening processes from the surface to the core of different nitrided steels of a material considering its use in arm manufacturing.

The article deals with analytical calculation and numerical simulation of interactive influence of electromagnetic sensors. Sensors are components of field probe, whereby their interactive influence causes the measuring error. Electromagnetic field probe contains three mutually perpendicular spaced sensors in order to measure the vector of electrical field. Error of sensors is enumerated with dependence on interactive position of sensors. Based on that, proposed were recommendations for electromagnetic field probe construction to minimize the sensor interaction and measuring error.