Superior Electric Powerstat Variable Autotransformer

Superior Electric PBA10-N01-1 Powerstat Variable Transformer 1

Vintage Powerstat Powerstat Variable Autotransformer Superior Electric Bristol

Superior Electric - Type 117BT - Powerstat Variable Autotransformer

Superior Powerstat Q117U Variable Auto Transformer 1.4 KVA 120V In 0-120V 12 Amp

Superior Electric Company Type 10C Powerstat Variable Transformer

POWERSTAT N10B VARIABLE TRANSFORMER TESTED OK

Vintage Superior Electric Powerstat Variable Transformer TYPE IHSOIUK -FOR PARTS