Hello, first post. Registered just to add my AVO 8 Mk 1½ mutant to this survey.
Finally located a pretty nice bakelite AVO 8, not as good and nice as many seen here.
This one is an old military surplus workhorse, calibrated in the FDF (Finnish defence forces) laboratory in 2008. It still has all calibration seals on it and seems to measure accurately what I have been tested so far.
So no inside pictures for more precise ID.
Couldn't resist to show my other analoge meter (FET) in pictures. Just wondering should I get A Marconi rangemaster.
Serial on movement
Two oldtimers
Avo 8 mk1? backplate