9 Measuring, signaling and checking apparatus and instruments, namely, pressure measuring apparatus, flow meters, gas flow meters, gas flow monitors, temperature sensors, sensors and instruments that measure and signal the function and operation of pumps and machines; apparatus and instruments for conducting, switching, transforming, accumulating, regulating or controlling electrical current; electric control, testing and monitoring apparatus, namely, ammeters, voltmeters, electric meters, electric sensors; energy distribution or control machines and apparatus, namely, transformers, distribution transformers, electric transformers, electrical relays and transformers, power inverters, current rectifiers, electrical distribution systems in the nature of power distribution panels, electrical distribution boxes, electrical power distribution units; electric regulating apparatus, namely, voltage regulators, transformers, inverters, rectifiers, frequency converters; recorded industrial process control software; power voltage regulators; electronic power voltage regulators; voltage regulators; measuring and control apparatus and instruments for measuring electrical power characteristics; precision measuring apparatus for measuring electrical power characteristics; pressure measuring apparatus, namely, pressure sensors; vacuum gauges; concentration meters; instruments for measuring length; sound level meters; sensors for measuring electrical power, pressure and temperature other than for medical use; electronic and optical communications instruments and components, namely, optical transmitters; electronic and optical communications instruments and components, namely, digital transmitters; wireless transmitters; transmitters of electronic signals; vibration meters; computer hardware; recorded software for use in the vacuum system and pump sector; downloadable computer programs for operating vacuum and pumping equipment; application software for mobile telephones; downloadable electronic publications, namely, articles and blogs, electronic user manuals, electronic technical sheets, electronic technical specifications, all in the field of vacuum and pumping systems; all the aforesaid goods intended exclusively for the vacuum system and pump sector; all the aforesaid goods not intended for compressors for motor-vehicle air conditioners