how are you testing your own tubes?

Ask some old timers in your neighborhood. I got a hickok 600a from my neighbor, in perfect shape, for 50$. He was so happy I was into tubes. He also gave me a huge box of tubes. Also, check on eBay. There’s plent o tube testers for sale. Good luck!

I think knowing what you are testing helps determine correlative measurements that could determine performances.  Tubes tested from various houses are provided with multiple measurement data.  With that in mind, use the right measurements per application.  Tube testers - If you are testing tubes and want reliability with your readings than modern equipment is available.  I use MaxiMatcher II.  http://maximatcher.com/maximatcher.htmlFinding a good or better tube tester of the antique version is sometimes difficult.  I learned from multiple purchases.  My choice unit is a B & K Dyna-Jet in almost pristine condition.  
Good Luck.