Sieko vacuum tube tester Adapter Extension Module – Includes Scroll! working

Specifications

If you own a sicko tube tester, you can Daisy chain this module to it and test an additional tube type. This came with the original blue box tube testers, I can’t remember the name of the model, but it’s on the roll. It comes with the originalpaper scroll that has all the settings for how to test the tubes on the tube tester. I no longer have the original tube tester, just this original adapter that allows you to test for other different types of tubes. While I have no reason to believe it is not working anymore from just sitting on a shelf, there are no guarantees, and it is Sold as is with no returns

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