Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signaling, checking in the nature of supervising, life-saving, and teaching apparatus and instruments, namely, cameras, optical lenses, life-vests; apparatus and instruments for conducting, switching, transforming, accumulating, regulating or controlling electricity; apparatus for recording, transmission or reproduction of sound or images; blank magnetic data carriers, blank recording discs; compact ...