Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signaling, monitoring, life-saving and teaching apparatus and instruments, namely, spectrometers, marine depth finders, marine radio communication machines, photographic projectors, photographic exposure meters, photographic filters, cinematographic machines and apparatus, optical cables, blank optical discs, optical discs containing software, optical discs, optical disc drives, optical disc readers, optical inspection apparatus for industrial use, optical readers, optical scanners, optical semiconductor amplifiers, oscillators, oscilliscopes, weighing apparatus and instruments, distance measuring apparatus, electric and electronic video surveillance installations, life-saving rafts, accumulators and batteries, acoustic conduits, acoustic couplers, acoustic membranes, acoustic meters, aerometers, altimeters, ammeters, anemometers, Antenna parameter measuring apparatus, audio speakers, automated self contained electronic surveillance devices that can be deployed to gather evidence or intelligence in remote locations, automatic microscopes, baby monitors, automatic valves, backlit signs, barometers, binoculars, biological microscopes, biomicroscopes, body armor, bullet-proof vests, bullhorns, burglar alarms, calculating scales, call bells, camcorders, car aerials, carbon dioxide detectors, cement testing machine, children's educational music CDs, DVDs and software, helmets, circuit testers, clinometers, concentration meters, cytometers, dish antennas, diving suits, dog whistles, dosimeters, electric buzzers, door bells, and chimes, electric meters, electric luminescent display panels, electrical eddy current test equipment, emergency flares, emergency warning lights, engine cut-out devices, flowmeters, fire alarms, fire blankets, flight simulators, flotation vests, flow meters, galvanometers, gas meters, gasometers, geiger counters, gyrometer, gyroscopes, manometers, hydrometers, calipers, laser pointers, life belts, life jackets, life preservers, life-buoys, odometers, opacimeter, wattmeters; apparatus and instruments for conducting, switching, transforming, accumulating, regulating or controlling electricity, namely, adapters, electric wires, electric cables, voltage regulators, voltage stabilizers, surge protectors, surge suppressors, voltage monitor modules, electric accumulators, electric actuators, electric capacitors, electric coils, electric connectors, electric contacts, electric control panels, electric couplings, electric switches, electric transformers, electric resistors, electric plugs, electric diodes, electric converters, electrical fuses, electrical inductors, electrical transducers; apparatus for recording, transmission or reproduction of sound or images; blank magenetic data carriers, blank recordable discs; automatic vending machines and mechanisms for coin-operated apparatus; cash registers, calculating machines, data processing equipment and computers; fire-extinquishing apparatus