[Eliot Ness]

I'll go along with Jerry and say I really like my Precision 10-12 tube tester. Although I also have a Hickock TV-7 I use the Precision 95% of the time because I've become so familiar with it and it is so easy to use:

http://www.indianaradios.com/Precision%2...Tester.htm

If you can afford it a Hickok or other mutual conductance tube tester is a fine piece of equipment, but unless you're selling tubes most can get by with a more affordable unit.

And for anyone seriously interested in vintage tube testers the book by Alan Douglas is a must have:

http://www.amazon.com/Tube-Testers-Class...1886606145

It should be noted, as one reviewer stated, "it is NOT a "review" of tube testers or test equipment on a "which one is better" or "what is the BEST" type of basis. Rather, it is a careful examination and explanation of the "method of operation" as well as the "inherent limitations" for a multitude of vacuum tube testers and test equipment."