O.K., back at repairing the VTVMs I was working on a while ago. The BC-211s will have to wait.
The neato-keano KG-620 Knight VTVM I scored at TRW some months ago turns out to be a real challenge. Sure the DC and Ohms works fine. Just seems that the AC is giving problems. The needle fluctuates (sometimes wildly) when I measure..er..AC. I will post a summary of my investigation in a while, but first I want to see if I can post a video depicting the symptoms:
..posted as a reference for those on the Antique Radio Test Equipment forum to view.