9 Scientific, electrical, optical, monitoring and measuring instruments, namely, instruments for measuring the thickness of layers by electromagnetic radiation, optical instruments for measuring the diffraction, refraction, absorption, luminescence, scattering, and reflection phenomena for the determination of layer thickness, coating thickness measurement instruments, [ electrical conductivity measurement instrument, micro hardness measuring instruments, porosity measuring instruments, ] instruments for measuring thickness of coatings, alloy composition, material analysis, [ porosity, electrical conductivity, ferrite content, microhardness, and other properties of coatings and layers; magneto-, opto-electronic data recording media, namely, blank magnetic computer tapes and floppy discs; ] electromagnetic radiation detectors; spectrometers, namely, X-ray fluorescence spectrometers; semiconductors detectors, color video cameras, X-ray detectors; X-ray tubes for scientific laboratory purposes, data processors; computers; computer software for use in controlling the scientific, electrical, optical, and monitoring parameters of measuring instruments and to analysis and evaluate, transmit and process the results