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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.
respiratory protection devices, namely, personal respirators supplying grade 'd' or better breathing air, whereby such protective device is worn during pharmaceutical manufacturing, spray painting, plant maintenance, tank cleaning, chemical and pesticide handling, and other industrial and agricultural applications