Bidspirit auction | No. 28 Combination Tester for

No. 28 Combination Tester for Alternating Current Only, 110 Volts, 60 Cycles - A No. 28 Combination Tester designed for alternating current only, operating at 110 volts and 60 cycles. The device is housed in a wooden enclosure featuring two mounted glass light bulbs on top, various metal terminals, switches, and a connected fabric-covered electrical cord. A metal plaque on the front details the specifications and operational parameters.