Calling all military and ex-military electronics weenies..... Remember the "boat anchor" PSM-6 multimeter? So heavy that it should have come with a 'scope cart, but RUGGED. The test equipment we loved to hate.
I picked up one of these beasties, surplus, in the 80's and have used it continuously ever since. The battery died a while ago, so can't measure resistance. The battery in my particular meter might not be the correct one. It's marked BA-1085/U and is dual voltage with wire leads. Cylindrical, about 11/16" in diameter and 4 1/2" long. 1.3v and 13.0v
I'd like to replace with separate, easier to get batteries. Anyone work out - or know of - such a modification?
Michael