Jackson 591 Capacitor Tester: Good, Bad or Ugly?

[Tubejunke]

Just wondering if anyone here has owned or used on of these. I'm becoming a living testament to the fact that vintage test equipment can be as addictive as the other stuff we hoard and need the test equipment to test or repair. I just decided I guess to make the whole vintage radio and TV thing more challenging in taking on a bunch of a new kind of box that does essentially the same thing.:banana:

Anyway, just when I thought my thirst was nearly quenched in purchasing old capacitor testers I find this old Jackson unit. I have come to realize that nearly every company on the planet made some version of a Wheatstone bridge based tester with load testing capability back when electronics was ELECTRONICS, so I have tried to narrow my purchasing down to the effective simplicity of Heathkit's models so that I can focus on a few key models to do a little work on and sometimes turn over for almost nothing considering the time involved even if I just provide a good working power supply. These old leakage testing units are supposedly catching on since they really don't make anything for any remotely reasonable price that can do a leakage test. Actually, I don't know if even Sencore makes the ultra high priced units they were making. At any rate, I hope to evolve into being able to provide a fully restored unit for a very reasonable price to anyone interested.

Anyway, to the topic; I have never owned anything by Jackson and I couldn't resist the look of this unit with an actual meter; not for current readings, but only capacitance value which may really be overkill when they could have done more good by having an on board ammeter. But hey; people are paying hundreds of dollars all of a sudden for Sprague TelOhmike TO-5s and TO-6s and they are the kings of overkill in my opinion. So I am hoping that there may be some good press on these Jackson testers. There is almost nothing on the web that I have found except one comment I think was on Steven Johnson's vintage test gear site noting a similar model to be extremely accurate and compared to his Sencore unit.