Tube & battery tester precision apparatus co model 612
B&k precision 747b dyna-jet dynamic mutual conductance tube tester. dynascan
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B & k model 445 crt tester with case and attachments
Mercury model 990 tube tester with original manual
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B&k precision dynascan model 467 picture tube restorer analyzer crt tv repair
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Heathkit it-5230 crt tester and rejuvenator crt test adapter
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