surface of the structure during the scanning procedure it is possible to implement a polar coordinate system for detects detection in combination with the data from the gyroscope accelerometer unit 17 the recording process is arranged in a discrete manner enabling an independent storage and access for different recorded portions memory segments of the scanning in the preferable configuration of the disclosed device the unit 9 calculates i magnetic field gradients distributed along the square area within the defined segment of the structure ii the values of the local mechanical stress within the defined segment of the structure the device allows identifying the location of defects using both in contact and remote magnetic measurements moreover it expresses the calculations in real time also providing the visualization of the information in the form of tomograms with reference to the 3d model of the controlled object moreover the device provides automated evaluation of the defects risk factor at respective identified location allows automatic processing interpretation and archiving of non destructive testing results in the alternative configuration of the disclosure the calculation unit 9 can be realized similarly to the u s pat no 4 309 659 patent moreover in the alternative configuration of the disclosure the recording unit 12 can be realized similarly to the ru2037888 patent the principle of operation of the device shown in fig1 is explained further in fig2 the fig2 a shows the structure 1 without defects with the preliminary magnetic tomography charts magnetogram 2 showing the measured background calibrated to zero level of magnetization the.