RELISTED BECAUSE OF ERROR IN BUYING FORMAT. Mercury 2000 Dynamic Mutual Conductance Tube Tester w/Manuals, TubeBook and many other paperwork. Even a Mercury catalog, warranty card and inspection string tag. It powers up but I am unable to test further. Detachable hinges, latches and handle are all good (some light scattered surface rust on latches. Bottom underside of case has some boo -boos. Packed carefully in sturdy box with plenty of bubble wrap to insure safe arrival. Sold “AS IS” no returns.