[philthespark]

I was speaking to one of the old boys from Megger Instruments last year at an industry event,as some of you will know, AVO at one point became part of Megger, and he was saying that they were in the process of setting up some sort of museum of old test equipment, whether it was going to be public, or just for those working within the industry was unclear, however he certainly knew a lot about the older kit, perhaps it would be worth giving them a ring and seeing if they can shed any light on this unusual meter design.