Vintage SIMPSON model 555 TUBE TESTER, appears to work fine

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Vintage SIMPSON model 555 TUBE TESTER, appears to work fine:
$155.50

Here is a Vintage Simpson model 555 Tube Tester. It looks to be made to test more early type tubes. It appears to work fine, and seems pretty easy to operate. It comes with its handbook. Be sure to read my conditions section for known flaws. S/H in USA lower 48 is FREE. Email with questions.