Leak detectors; leak detection apparatus; leak testing devices; leak testing apparatus; leak control instruments; tracer gas leak detection apparatus; flow meters; flow test instruments; instruments for testing pressure switches, valves, discharge valves, catheters, aerosol valves, flaps; volume test instruments; Pitot tubes; Pitot tube covers; Pitot tube testers; apparatus and instruments for testing Pitot-static circuits; apparatus and instruments for testing anemometric flight instruments, speed indicators, altimeters, variometers; battery testers; battery chargers; battery discharge apparatus; battery testing apparatus and instruments; millimeter measuring apparatus, namely, apparatus for measuring low resistance of electric current; pressure control loop characterization instruments; pressure control loop characterization instrument testers; circuit testers; electric circuit testers; engine testing apparatus; battery testers; engine analyzers; apparatus for measuring, signaling and monitoring battery charge level and battery life; electronic apparatus for battery diagnosis; pressure gauges; automatic tire pressure control apparatus and instruments; electronic tire pressure monitoring instruments; automatic indicators of low pressure in vehicle tires; electronic instruments for synchronizing vehicle tire pressure sensors; tire pressure measuring sensors; pressure indicators; tire pressure measuring apparatus; electronic instruments for the calibration of leak detectors; interfaces (for computers) for leak detection apparatus and instruments, leak testing devices, leak testing apparatus, sealing control instruments, Pitot tube testers, in flight instrument testing apparatus and instruments, battery testers, battery chargers, battery discharge apparatus, electrical circuit testers, multimeters, engine testing apparatus, apparatus for measuring and monitoring battery charge level and battery lifetime, electronic battery diagnostic apparatus, automatic tire pressure control apparatus and instruments, electronic tire pressure monitoring instruments, electronic leak detector calibration instruments; control, checking, management, and maintenance of leak detection apparatus and instruments, leak testing devices, leak testing apparatus, sealing control instruments, Pitot tube testers, in flight instrument testing apparatus and instruments, battery testers, battery chargers, battery discharge apparatus, electrical circuit testers, multimeters, engine testing apparatus, apparatus for measuring and monitoring battery charge level and battery lifetime, electronic battery diagnostic apparatus, automatic tire pressure control apparatus and instruments, electronic tire pressure monitoring instruments, electronic leak detector calibration instruments; data backup software for leak detection apparatus and instruments, leak testing devices, leak testing apparatus, sealing control instruments, Pitot tube testers, in flight instrument testing apparatus and instruments, battery testers, battery chargers, battery discharge apparatus, electrical circuit testers, multimeters, engine testing apparatus, apparatus for measuring and monitoring battery charge level and battery lifetime, electronic battery diagnostic apparatus, automatic tire pressure control apparatus and instruments, electronic tire pressure monitoring instruments, electronic leak detector calibration instruments.

Maintenance and repair of leak detection apparatus and instruments, leak testing devices, leak testing apparatus, sealing control instruments, Pitot tube testers, in flight instrument testing apparatus and instruments, battery testers, battery chargers, battery discharge apparatus, electrical circuit testers, multimeters, engine testing apparatus, apparatus for measuring and monitoring battery charge level and battery lifetime, electronic battery diagnostic apparatus, automatic tire pressure control apparatus and instruments, electronic tire pressure monitoring instruments, electronic leak detector calibration instruments.

Design, maintenance, development and updating of control, checking, management and maintenance software for the following products, leak detection apparatus and instruments, leak testing devices, leak testing apparatus, sealing control instruments, Pitot tube testers, in flight instrument testing apparatus and instruments, battery testers, battery chargers, battery discharge apparatus, electrical circuit testers, multimeters, engine testing apparatus, apparatus for measuring and monitoring battery charge level and battery lifetime, electronic battery diagnostic apparatus, automatic tire pressure control apparatus and instruments, electronic tire pressure monitoring instruments, electronic leak detector calibration instruments; design, maintenance, development and updating of data backup software for the following products, leak detection apparatus and instruments, leak testing devices, leak testing apparatus, sealing control instruments, Pitot tube testers, in flight instrument testing apparatus and instruments, battery testers, battery chargers, battery discharge apparatus, electrical circuit testers, multimeters, engine testing apparatus, apparatus for measuring and monitoring battery charge level and battery lifetime, electronic battery diagnostic apparatus, automatic tire pressure control apparatus and instruments, electronic tire pressure monitoring instruments, electronic leak detector calibration instruments; designing and developing leak detection apparatus and instruments, leak testing devices, leak testing apparatus, sealing control instruments, Pitot tube testers, in flight instrument testing apparatus and instruments, battery testers, battery chargers, battery discharge apparatus, electrical circuit testers, multimeters, engine testing apparatus, apparatus for measuring and monitoring battery charge level and battery lifetime, electronic battery diagnostic apparatus, automatic tire pressure control apparatus and instruments, electronic tire pressure monitoring instruments, electronic leak detector calibration instruments.