Scientific, research, navigation, surveying, photographic, cinematographic, audiovisual, optical, weighing, measuring, signalling, detecting, testing, inspecting, life-saving and teaching apparatus and instruments; apparatus and instruments for conducting, switching, transforming, accumulating, regulating or controlling the distribution or use of electricity; apparatus and instruments for data recording, transmission, reproduction or processing; recorded or downloadable media; software (recorded programs); computer programs (downloadable software); computer platforms in the form of recorded or downloadable software; software for diagnostics and troubleshooting; applications for mobile devices; data processing devices; computer interfaces; calculating devices; computers and computer peripheral devices; leak detectors; leak detection apparatus, instruments and devices; leak checking apparatus, instruments and devices; optical spectrometers; mass spectrometers; black boxes [data recorders]; seal testing devices; leak testing apparatus; leak control instruments; gas testing apparatus; tracer gas leak detection apparatus; testing apparatus not for medical use; battery testers; electronic instruments for the calibration of leak detectors; interactive information terminals; electric and electronic display boards; alarms; downloadable electronic publications; flow meters; flow test instruments; volume test instruments.