9 Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking, life-saving and teaching apparatus and instruments, namely, telescopes, microscopes, cameras, digital signal processors, centering apparatus for photographic transparencies, photometers, camcorders, cinematographic cameras, film cutting apparatus, binoculars, spectacles, precision balances, scales, barometres, thermometers, signal or alarm bells, air analysis apparatus, namely, gas detectors for detecting the presence of gas in the air; apparatus and instruments for conducting, switching, transforming, accumulating, regulating or controlling electricity, namely, adapters, electric accumulators, electric actuators, electrical cables, electric wires, conductors and connection fittings therefore, electrical switches, electrical distribution panels, switchboard, electrical control panels, distribution cabinets and switch cabinets, electric power supply devices, switch-mode electrical power supplies, switching power supplies, high-frequency changeover electrical switches, matching network switches and transformers for electric power and electric power supplies; apparatus for recording, transmission or reproduction of sound or images; magnetic data carriers, namely, blank magnetic data carriers; recording discs, namely, blank recordable optical disc, blank record disks, blank diskettes; automatic vending machines and mechanisms for coin-operated apparatus; cash registers, calculating machines, data processing equipment and computers; fire-extinguishing apparatus; computer operating recorded programs