An NRI (National Radio Institute) Professional Model 70 vacuum tube tester housed in a hinged wooden case. The unit features an analog meter readout, test sockets, selector knobs, and push-button controls, along with an integrated roll chart and powe
NRI Professional Model 70 Vacuum Tube Tester in Wo
An NRI (National Radio Institute) Professional Model 70 vacuum tube tester housed in a hinged wooden case. The unit features an analog meter readout, test sockets, selector knobs, and push-button controls, along with an integrated roll chart and powe
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- Location
- Arcanum, Ohio, United States (US)