Working . Calibration seems ok. I included some
Photos testing a 6sn7, 6l6 and 5v4.
These tubes are NOT included with the auction
This is a project tester that is missing the cover and pin straightener plastic parts. The cord is a bit brittle feeling and should be replaced. These are good testers . Please example photos carefully . I do not have a manual ore tube chart for this tester . They are available on ebay or on the web