Electrical, signalling, surveillance, mapping and surveying apparatus and devices, including solid state recorders, global positioning system (GPS) tracking devices, switching devices, signal transmitters and repeaters, microphones, antennas and electrical cables; apparatus for recording, transmission and/or reproduction of data, sound or images; computer hardware and software, particularly for surveillance, tracking and mapping purposes; electrical, magnetic or optical recording media

Scientific documentation & software. Nautical & surveying docum. & software. Magnetic data carriers. Data processing equipment & computers. Advertisements therefore