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OCR: from neon. sign trans former 9000 volts. 018 ampere bariurn getter aluminum foil electrodes Brewster window adjusting screws for mirror plate axis of laser beam end cut from base naks access holes bracket on vnderside all tobing of sof lass thick extruded Plexiglas aluminvm doorframe supports fram bariurr getters slectrodes serews make hole brackcts tubing truded aluminom