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Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments; apparatus and instruments for conducting, switching, transforming, accumulating, regulating or controlling electricity; apparatus for recording, transmission or reproduction of sound or images; magnetic data carriers, recording discs; automatic vending machines and mechanisms for coin-operated apparatus; cash registers, calculating machines, data processing equipment and computers; fire-extinguishing apparatus.
electrical signal generators, radio noise meters, field strenght meters, power packs forming part of signal generators and radio noise and field strenght meters, dummy antennas, voltage multipliers, radio signal calibrators, exploring prods and probe calibration coils, termination units consisting of attenuators and indicators for testing radio receivers or the like, combined pick-up loop tuners and amplifiers for field strength measurement, amplifiers forming part of measuring and testing instruments, slotted measuring lines, and parts thereof