Re: AVO Multimeter survey
John,
Once again PMMunro has come to the rescue. Apparently the Model 40 WAS produced and advertised this late, with the serial number format corresponding with that used on the Models 7 & 8 of the same era.
Yours is from November 1978.
This is what makes the survey so useful; I'd assumed that the Model 40 was long extinct by then - the latest one in my records was July 1967 !
Happy measuring.
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