Re: AVO Multimeter survey
Thanks, guys.
Edward, your Model 7 is a Mk I (version 2) from 1951
For TLC instructions, consult contributions from PMMunro in earlier threads.
But I suggest that if it works, leave it alone. AVOs hold their performance almost indefinitely - often despite abuse. If you open them up, even just to look, you will allow dust ingress, moisture ingress, magnetic contamination/deterioration, and all sorts of handling-induced problems.
If it ain't broke ... resist the temptation to do what we all instinctively want to do.
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