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SPCh · 5th Mar 2008, 11:41 pm

Phil,

The serial number is certainly consistent with a 20 Range AVO from February 1937.
(AVO never called "Model 3", although that's what it was).

If it is a Model 3, it should have 12-based voltage & current ranges,
and four resistance ranges (1K, 10K, 100K & 1M)
only the lower two of which work on the internal battery.

5th Mar 2008, 11:41 pm	#273
SPCh Rest in Peace Join Date: Nov 2004 Location: Antwerp, Belgium Posts: 345	Re: AVO Multimeter survey Phil, The serial number is certainly consistent with a 20 Range AVO from February 1937. (AVO never called "Model 3", although that's what it was). If it is a Model 3, it should have 12-based voltage & current ranges, and four resistance ranges (1K, 10K, 100K & 1M) only the lower two of which work on the internal battery.