AVO

ELECTRICAL MEASURING INSTRUMENTS AND ELECTRICAL TESTING INSTRUMENTS-NAMELY, INSTRUMENTS FOR MEASURING ANY ONE OR MORE OF THE FOLLOWING QUANTITIES-NAMELY, ELECTRICAL CURRENT, VOLTAGE, RESISTANCE, CAPACITY, POWER, INDUCTANCE, AND DECIBELS; (( VALVE TESTERS; ELECTRICAL OSCILLATORS; HOLDERS FOR TESTING VALVES; PLUG AND SOCKET COUPLING DEVICES FOR USE WITH TESTING HOLDERS; TESTING ACCESSORIES; )) LIGHT METERS; (( PHOTOELECTRIC EXPOSURE METERS; VALVE PANELS FOR VALVE TESTERS; )) RESISTANCE RANGE EXTENSION UNITS, VOLTAGE MULTIPLIERS, SHUNTS, AND TRANSFORMERS FOR MEASURING INSTRUMENTS; MEASURING BRIDGES