Superior Instrument Co. Tube Tester Model Td-55 & Manuals

US $410

  • Goldthwaite, Texas, United States
  • Jun 9th
Here is a compact tube tester Model TD-55 made by Superior Instruments Co.  Looks clean inside and out.  Copies of manual, tester question and answers, and the tester settings for a variety of tubes.  Can test octal, loctal, seven pin, nine pin, and nuvistor tubes.  I tested a 6W6 tube and obtained good reading.  As with all tube testers, comparison to a known new tube helps to judge the actual goodness.  Did not see any burned components so unit seems to function.  I also did check filament voltages and all are present, so believe the transformer is OK.
all functions not tested; no carrying case; small crack in side of meter cover
Brand Superior
MPN Does Not Apply
Model TD-55

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