Technology@lemmy.worldEnglish · 2 years ago

tube tester

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tube tester

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m3t00🌎@lemmy.world to

Technology@lemmy.worldEnglish · 2 years ago

tube tester

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m3t00🌎@lemmy.worldOP
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2 years ago
haven’t seen one in use for at least 20 years. 60, 70s mainly

much smaller now. https://www.amazon.com/s?k=tube+tester

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