voltmeter for HT bench supply

[Kalee20]

Can't you use moving-coil meters? There are some fairly cheap Chinese ones on ebay - I used three for a very similar project (that's tied up right now running a life test on Russian rod pentodes). Although I use external DMM's for accurate measurements, they're quite adequate for indication, and are easy to re-scale.

Photo shows a Work In Progress view of my front panel.