The paper presents the analysis of nondestructive testing equipment under investigation. There are two main parts of the research as well as this paper. The first part shows the present state of the developed nondestructive tester based on the Magnetic Flux Leakage method, the other part reviews the simulation and the results, which have been made with the principle of the Finite Element Method. The aim now is to define the order of magnitude of the magnetic flux density in the positions of the sensor.