There should be a way to rig a simple resistor to do what you need. You may have to re-scale the meter, but that should do it. Perhaps an adjustable wire-wound resistor that you could tweak until *your* voltage range matched the meter range?

https://www.alliedelec.com/search/pr...x?SKU=70023692 As a one-off, the cost would not be too excessive. And the meter would be just as 'accurate' as before. But there should be no reason to get fancy. It would all depend on how much current is going through the resistor(s).

Peter Wieck
Melrose Park, PA