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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.
instruments for measuring, monitoring, indicating, recording, computing, and controlling physical, chemical, and biological characteristics of fluids, components thereof, and contaminants therein; polarographic electrode assemblies, fluid-sampling equipment, and depth recorders; portable, mobile, and fixed-station systems thereof; and containers, power supplies, pumps, and trailers as accessories therefor