Electronic machines, apparatus and their parts, namely, Geiger counters, high frequency welders, cyclotrons not for medical purposes, industrial X-ray machines and apparatus not for medical use, industrial betatrons not for medical use, magnetic prospecting machines and magnetic object detectors, namely, metal detectors; shield cases for magnetic disks, seismic exploration machines and apparatus, echo sounders, ultrasonic, flaw detectors, ultrasonic sensors, electrostatic copying machines, el...