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Old 1st Jul 2020, 5:14 pm   #2569
Superscope
Octode
 
Join Date: May 2017
Location: St Austell, Cornwall, UK.
Posts: 1,018
Default Re: AVO Multimeter survey

Survey Update.

Even though this Thread does go quiet occationally, a fair bit of work
is still going on behind the scenes.

Recent analysis

It is now seems certain, unless any information to the contary is forthcoming,
that before the introduction of the Model 7 in 1936, ACWEECO only used Two
numbering sequences for the Full Sized Meters (Excluding the Model 1).

The First was for the DC Range meters, thus, the Model 2 & 6 share the same Number Sequence.
We don't know how ACWEECO numbered their first Model 2 off the production line, as it is unlikely
to have been 0001.
It is more likely to have been 0100 or 1000, so unless we find earlier Numbers, it is assumed for now,
that Model 2's started at 1000.
Thus the complete Number Range was likely from 1000 until around 6800.
Obviously, we also don't know the final Model 6 Serial No, but 6745 is the last we do know about.
This implies, around 5800 DC Avometers in Total were made between 1927 and 1939, and most,
by a large margin being Model 2's.

The Second was for the Universal Range Meters, so Models 3, 4 & 5 all share the same
single sequence of numbers.
The Model 3 certainly started below 1000, as we have 13-919 recorded, so for now we will assume
the Model 3's started at 100.
The Universal Number Range is thus, likely to range from 100 until about 9000.
We don't know the number of the last ever Model 5, but we have 79-8686 recorded, so 8900 seems
plausible for the number of early Universals built.

Ian
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