SCIENTIFIC, NAUTICAL, ELECTRICAL AND ELECTRONIC, OPTICAL, WEIGHING, MEASURING, ANALYSIS, DISPLAY, SIGNALING AND CHECKING, SUPERVISION APPARATUS AS WELL AS INSTRUMENTS AND EQUIPMENT, NAMELY FLOW METERS, AMMETERS, WATER AND GAS, METERS, VOLTMETERS, GAS, LIQUID AND PHYSICAL PROPERTY ANALYZERS, SPECTROMETERS, PHOTOMETERS, LOAD CELLS, SENSORS, FLOW SENSORS, TEMPERATURE SENSORS, INTEGRATORS, METAL DETECTORS FOR INDUSTRIAL PURPOSES, ACTUATORS, CONTROL VALVES FOR REGULATING THE FLOW OF GASES AND LIQU...