VINTAGE DYNAMIC TUBE TESTER by The Jackson shop Electrical Company {Model 648-S}, VINTAGE DYNAMIC TUBE TESTER by The Jackson Electrical Company {Model 648-S} save on
$200.00
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$100.50
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VINTAGE DYNAMIC TUBE TESTER by The Jackson shop Electrical Company {Model 648-S}, VINTAGE DYNAMIC TUBE TESTER I have not tested it and do not know if it has been calibrated For full.