I am thinking about integrating a Triplett 660 Load meter in to my current limited variac supply. But It seems some time between 1959 and now one of the resisters was cooked by to high a load on the low range. These use wire wound resisters, but I can not dig up a service manual or documentation on this unit. It is a very simple meter and should take about 2 seconds to repair if I can find the component values.
Zen