ELECTRIC MEASURING AND TESTING DEVICES-NAMELY, VOLTMETERS, AMMETERS, OHMMETERS; VOLTAGE TESTERS FOR INDICATING POLARITY AND VOLTAGE RANGES; ELECTRIC TESTING KITS CONTAINING VOLTAGE, AMPERAGE AND RESISTANCE MEASURING INSTRUMENTS; ELECTRIC TEMPERATURE MEASURING AND RECORDING INSTRUMENTS; ACCESSORIES FOR USE WITH ELECTRIC MEASURING AND TESTING INSTRUMENTS-NAMELY, PHASE SEQUENCE ADAPTORS, ADAPTOR CLAMPS, TEST LEADS; ELECTRIC STRIP CHART RECORDING INSTRUMENTS AND ACCESSORIES-NAMELY, VOLTAGE ADAPTO...

ELECTRICAL RECORDING AND [ INDICATING INSTRUMENTS-NAMELY, VOLTMETERS, AMMETERS, VOLT-AMMETERS, STEP-UP AND STEP-DOWN DEVICES USABLE WITH VOLT-AMMETERS, CIRCUIT TRACERS, VOLT AND AMPERAGE RECORDING INSTRUMENTS, NULL-BALANCE ] MEASURING INSTRUMENTS [ , DEVICES FOR AMPLIFYING MEASURING INSTRUMENTS, OUTPUT AND AUTOMATIC INSTRUMENT CONTROLLING SWITCHES ]

ELECTRICAL RECORDING AND INDICATING INSTRUMENTS-NAMELY, VOLTMETERS, AMMETERS, VOLT-AMMETERS, STEP-UP AND STEP-DOWN DEVICES USABLE WITH VOLTAMMETERS, CIRCUIT TRACERS, VOLT AND AMPERAGE RECORDING INSTRUMENTS, NULLBALANCE MEASURING INSTRUMENTS, DEVICES FOR AMPLIFYING MEASURING INSTRUMENTS, OUTPUT AND AUTOMATIC INSTRUMENT CONTROLLING SWITCHES