Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signaling, checking and supervision, life-saving and teaching apparatus and instruments, namely, microscopes, compasses, protractors, cameras, magnifying glasses, telescopes, graduated rulers, emergency flares, optical lenses, scales, signaling buoys, life-saving rafts, components and assemblies for the cooling and heating of equipment, namely, internal cooling fans for computers and electronic contr...