How to check voltages??

[Tubejunke]

Looks like these extenders would help, if someone lucked up and found some. If I could find a connection for tube bases and sockets, I could make them myself. I know you can still buy the sockets new. It might be possible to create the bases out of dud tubes. For now I need to check some voltages on this Zenith. Perhaps I can remove the big 24" crt and build a side mount jig to hook everything up.

I know a man who has some kind of universal chassis test jig of some sort. He told me that it was from the 70's, or so, and you more or less take a chassis like I am dealing with and hook it up to this 'tester" and somehow dial in settings. Then supposedly you view the performance of the chassison the screen and through the speaker of the test unit. Sounds great, but I'm sure it's limited as to how many years or models can be tested on it.