ELECTRICAL APPARATUS-NAMELY, DIRECT AND ALTERNATING CURRENT AMMETERS, VOLTMETERS, WATTMETERS, VARMETERS, VOLTAMMETERS; BATTERY TESTING VOLTMETERS, LINE CURRENT TESTERS, POWER FACTOR METERS, FREQUENCY METERS, HIGH-FREQUENCY AMMETERS, PORTABLE POTENTIAL TRANSFORMERS AND CURRENT TRANSFORMERS, CYCLE COUNTERS; SWITCHBOARD AND PANEL INSTRUMENTS INCLUDING DIRECT AND ALTERNATING CURRENT AMMETERS, VOLTMETERS, WATTMETERS, VARMETERS, AND FREQUENCY METERS; VACUO JUNCTIONS, AMPERE HOUR METERS, STATIC VOLTMETERS, VOLUME LEVEL INDICATORS, GROUND DETECTORS, SYNCHRONISM INDICATORS, RECORDING INSTRUMENTS INCLUDING DIRECT AND ALTERNATING CURRENT AMMETERS, VOLTMETERS AND WATTMETERS, 3-PHASE VARMETERS AND 3-PHASE DEMAND RECORDERS

'3':78,82 'altern':7,44,72 'ammet':9,28,46,74 'amper':55 'apparatus':3 'apparatus-nam':2 'batteri':14 'counter':36 'current':8,18,33,45,73 'cycl':35 'demand':84 'detector':64 'direct':5,42,70 'electr':1 'factor':21 'frequenc':23,27,51 'ground':63 'high':26 'high-frequ':25 'hour':56 'includ':41,69 'indic':62,66 'instrument':40,68 'junction':54 'level':61 'line':17 'meter':22,24,52,57 'name':4 'panel':39 'phase':79,83 'portabl':29 'potenti':30 'power':20 'record':67,85 'static':58 'switchboard':37 'synchron':65 'test':15 'tester':19 'transform':31,34 'vacuo':53 'varmet':12,49,80 'voltammet':13 'voltmet':10,16,47,59,75 'volum':60 'wattmet':11,48,77

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