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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.
commercial diving equipment, namely, underwater masks, helmets, protec tive hats, protective hoods, breathing gas regulators, neck bands, hel mets liners and gas cylinders; underwater sporting equipment, namely breathing gas cylinders, gas manifolds, gas valves, gas hoses for atta chment to underwater breathing gas systems, first and second stage reg ulators for breathing gas, breathing gas control yokes, pressure gauges, depth gauges, compasses, diving suits, boots, mittens and jack ets all made from elastomeric wetsuit material, buoyancy compensators, life vests, masks, weight belts; fire fighting equipment, namely, fire fighting emergency breathing apparatus, regulators, masks and man ifolds; and portable emergency oxygen supplies within pressuried conta ners, including masks and regulating means, firemens' protective clothing, namely turn out coats, bibs, jackets, overalls, helmentsand respirators for filtering air for breathing purposes