Scientific, surveying, optical, measuring, signalling, checking (supervision) 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; and other digital recording media, calculating machines, data processing equipment, computers; computer software; connections for electric lines; couplers (data processing equipment); accumulators, electric; global positioning system (GPS) apparatus; apparatus and instruments for astronomy; branch boxes (electricity); switchboxes (electricity); junction boxes (electricity); photovoltaic cells; collectors, electric; comparators; printers for use with computers; laptop computers; condensers (capacitors); optical condensers; meteorological instruments; current rectifiers; safety nets; cell switches (electricity); refractometers; refractors; distance recording apparatus; remote control apparatus