This paper proposes the description of a simple method for determination of metallic fillers concentration in composite materials laminated, plastic-metallic fillers type. The bulk resistivity and dielectric permittivity measurements of the studied composites have been performed, these measures being less influenced by the fillers concentration. The amplitude measurement of e.m.f induced in the reception coil of the focused transducer with orthogonal coils and their averaging for the scanning of a relative large zone of the composite has proven to be an efficient method. The average amplitude linearly decreases with the increasing of fillers concentration, and has different values for Cu and AISI 316 fillers.