Meters, namely, pH meters, electric meters; water meters; apparatus and instruments for weighing, measuring, signalling, checking (supervision) water, namely, water tank level gauges; apparatus and instruments for conducting, switching, transforming, accumulating, regulating or controlling water, namely, water meters, water level indicators, water level gauges, water level indicators, water temperature gauges, oil-water thermistors, water leakage detection alarms, water distress luminous beacons, rods for water diviners, oil-water level sensors, water level detection apparatus, water level indicators for vehicles, water sprinkling devices for fire control, scientific apparatus for determining the water content in petroleum products; electric meters; electricity meters; electric flow meters; electric current meters; electronic flow meters; thermal meters not for medical use; heating meters; temperature meters for household use; temperature meters for industrial use; temperature meters for scientific use; pressure meters; gas meters; gas flow meters; rotary gas meters; flowmeters; fluid flow meters; mass flow meters; soil moisture meters; liquid level meters; PH meters; level meters; acidity meters; gravity meters; moisture meters; humidity meters; millivolt meters; current-meters; power meters; speed meters; distance meters; turbine meters; fuel gauges; capacitance meters; panel meters; conductivity meters; voltmeters; torque meters; concentration meters; acoustic meters; exposure meters; light meters; vibration meters; luminoflux meters; parking meters; frequency meters; electronic distance meters; cyrogenic turbine meters; fuel consumption meters; positive displacement meters; wheel alignment meters; phase angle meters; insulation resistance meters; digital panel meters; electrotechnical vibration meters; sound level meters; radio-frequency power meters; exposure meters for photographic devices