[Test-Equipment] Looking for modern Sprague TO-6A

[Ken Kaplan]

I need to find a modern replacement for a Sprague TO6-A. Our lab needs 
to test a wide range of capacitors for leakage and insulation 
resistance. Actual capacitance value and ESR I have covered. 
Electrolytics range from 10uF @ 15v to 4500uF @ 350v and 499,000uF @ 
35v. Will also have some electrostatic caps rated up to 1050v. The TO-6A 
is only good to about 600v and is slow to charge really large caps. I've 
been told that several thousand $ for a new piece of equipment is ok. 
I've seen some Chinese units on the web but I've noticed that the panel 
lettering is in Chinese. I can imagine what the manual is like. I'm 
thinking about calling engineering at a cap company to find out what 
they use. Anyone here have suggestions?

Thanks,
Ken