HAND HELD ELECTRONIC INSTRUMENTS AND PARTS THEREFOR, NAMELY, MULTIMETERS; pH METERS; METERS; CALIBRATORS; TESTERS; TEST TOOLS; ALL FOR MEASUREMENT OF TEMPERATURE, VOLTAGE, CURRENT, PRESSURE, ACIDITY, OXYGEN, FLOW OF FLUIDS; TEST PLUGS, SOCKETS AND CONNECTORS FOR WIRE; MULTICONDUCTOR WIRE; THERMOCOUPLE WIRE; RETRACTABLE CABLE; JACK PANELS; JACK PANEL CONDUIT BOXES; PANEL METERS; RESILIENT BOOTS, SLEEVES, BUMPERS AND SHOES FOR ELECTRONIC INSTRUMENTS AND MULTIMETERS; INFRARED TEMPERATURE TRANSMITTERS; MICRO PROCESSOR TRANSMITTERS; OXYGEN METERS; PRESSURE TRANSMITTERS; TEMPERATURE TRANSMITTERS; SIGNAL CONDITIONERS; FLOW SENSORS; GAS FLOW METERS; THERMOCOUPLE CONNECTORS, SENSORS AND PROBES; ALL THE ABOVE FOR USE IN SCIENCE AND INDUSTRY