9
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.
electronic devices for locating water leaks in pipes, namely, stethoscopes; electric and battery-powered sensors for detecting water leaks in pipes comprised of water meters, head phones, probes in the nature of metal elongated rods, sound amplifiers, sensor magnets, water sensors, ground noise sensors and vibration sensors