Lot · Tube Testers
Superior Instruments Co. Model TV-12 Mutual Conductance Vacum Tube Tester
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Sun · Jul 26, 2026
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Condition
Used
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Refurbished
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ZIP 551**
curri_5865
139 ratings · 100.00% positive
Description
From the sellerModel TV-12 Mutual Conductance Vacum Tube Tester. I checked operation with a large variety of tube types and got expected comparative results with my own tester. I show it testing a known-good 6146 transmitting power tube.
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