File:MAIN CONTROL ROOM LOOKING NORTHEAST. THE INSTRUMENT LOCATED AT THE TOP CENTER IS A SYNCHROSCOPE USED TO ASCERTAIN PHASE OF A GENERATOR PRIOR TO CONNECTING IT ON THE LINE. WHEN HAER CONN,1-GREWI,15A-51.tif
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![File:MAIN CONTROL ROOM LOOKING NORTHEAST. THE INSTRUMENT LOCATED AT THE TOP CENTER IS A SYNCHROSCOPE USED TO ASCERTAIN PHASE OF A GENERATOR PRIOR TO CONNECTING IT ON THE LINE. WHEN HAER CONN,1-GREWI,15A-51.tif](https://upload.wikimedia.org/wikipedia/commons/thumb/7/79/MAIN_CONTROL_ROOM_LOOKING_NORTHEAST._THE_INSTRUMENT_LOCATED_AT_THE_TOP_CENTER_IS_A_SYNCHROSCOPE_USED_TO_ASCERTAIN_PHASE_OF_A_GENERATOR_PRIOR_TO_CONNECTING_IT_ON_THE_LINE._WHEN_HAER_CONN%2C1-GREWI%2C15A-51.tif/lossy-page1-800px-thumbnail.tif.jpg?20140708163645)
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