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.
electrical instruments, namely, devices employing computer software for use in acquiring, analyzing and displaying rotating rotor and propeller blade track and balance data, from helicopter and fixed wing aircraft to determine blade out-of-track or unbalance for use in connection with hardware boxes and sensors for helicopter aircraft part diagnostics