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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.
safety equipment, namely, safety harnesses, lanyards, full-body harnesses, life lines, rope, climbing rope, lifting and rigging rope, rope grabs, descenders for use in descending ropes, belay devices for use in descending ropes, pulleys, safety helmets, protective safety gloves, support anchors, safety snap hooks, carabiners and safety belts all for use by persons working at elevated levels, and retractable safety systems composed of retractable safety harnesses and one or more of the following, lanyards, full-body harnesses, life lines, ropes, rope grabs, support anchors, safety snap hooks, carabiners and safety belts all for use by persons working at elevated levels, sold as a unit