This is a Stark 9-66 Tube Tester. The circuitry is based on the Hickok line of Tube Testers. The circuitry of the Stark 9-66 Tube Tester is basically the same
Stark Tube Testers.
This is a Stark 9-66 Tube Tester. The circuitry is based on the Hickok line of Tube Testers. The circuitry of the Stark 9-66 Tube Tester is basically the same