9 Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signaling, checking, life-saving and teaching apparatus and instruments, namely, cameras, digital cameras, movie cameras, motion picture cameras, telescopes, microscopes; apparatus and instruments for conducting, switching, transforming, accumulating, regulating or controlling electricity, namely, transformers, circuits, batteries, wires, microcircuits, circuit boards, battery chargers; apparatus for recording, transmission or reproduction of sound and images; blank magnetic data carriers and recording discs; cash registers, calculators; data processors and computers