Re: AVO Multimeter survey
I have a Test Set Multirange No. 1 - looks like ex-RAF last calibrated in the mid-1970s.
On the bottom LHS of the scaleplate there are the following characters in the "ser. no." space: A.C.W./R 472 1094.
This meter would not zero properly on the ohms div. 100 range - this was cured by cleaning the contacts on the 1A fuseholder in the battery compartment.
Roger.
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