Help with tube tester


I have a chance to buy a bunch of electronic equipment from an out of business electronic store. I would do so because it includes tubes and some tube testers. It also includes some old recievers, preamps etc. He wnats to sell the stuff all as one lot. I am new to tubes but learning and would like to pick up a tester. The guy says he has a Supreme Radio Diagnometer Master Series #301 by Supreme Instruments in a nice oak box and also a Supreme Model #35 tester. Anyone know anything about these, such as possible price and value to me so that I can test the 6922, 7308 E88cc type tubes that my preamp uses? I know enough to know that I should go over and see the stuff and take down some model numbers and tube numbers to have a better idea of what has got. Any help even pointing me in the correct direction would be of great help. Thanks
gammajo
I do not think the Supreme Model #35 will test 6DJ8/6922/7308 tubes.

Still might be worth owning though especially if it is in decent shape. Made in 1935.
Supreme Tube Testers
If these are filament testers they are useless. Only mutual conductance tube testers have any value for audio tubes. The other issue, as mentioned before, is that all testers do not have the set-up guides to test all tube types.
I'd suggest calling Andy Bouwman at Vintage Tube Services. He's the man when it comes to tubes, and he is quite knowledgeable about tube testers. He saved me from making a mistake. I ended up purchasing a B&K 606, which suited my purposes.