power tube bias tools/probes recommendation?

[stokes]

I built something like this years ago,havent used it in a long time.Do you have an ammeter?Just connect the red lead to your OT center tap and the black lead to one of the plates and you will read the actual current draw for that side of the OT.If it is a 2 tube output the reading is what that tube draws,in a 4 tube output you divide the reading by 2 to see what each tube is drawing.I find it easier than dragging out the bias probe,when checking the bias I usually have tha amp opened anyway.

 

[edgarallanpoe]

Does Webber still make the bias rite? If so, that is the one to get. I have used it a ton of times and it is dead simple to use.