[steveq1]

Hi,
I'm the one who sent the picture of the HRM to richard; I didn't know of the AVO Multimeter Survey until I got his reply. Anyway, here's a list of my AVO's

mod. 7 s/n 7443-10029
mod. 7 s/n 13418-A-150 metal case
mod. HRM s/n 702-847 (as per Richards previous post)
mod. 8 s/n 71808-C-358
mod. 8 s/n 8641-C-852
mod. 8 III 28486.1165

I also have 2 Mk1 multiminors. No serial numbers, but there are numbers moulded into the interior bakelite (see attachment). What is of interest is the number 40628/1 on BOTH the meter-housing mouldings. This is the same as the serial number given for the only mk1 multiminor listed in edition 4 of the survey (PS are mk1's rare, or people just haven't bothered listed them?)
Anyway, it would seem likely that the number is NOT a s/n, but rather a moulding identification.

Of other interest, I came across a bulletin issued by the British Vintage Wireless Society, Vol 5 No 3 (December 1980). It has a 4-page article titled "History of 'The Avometer'". This was submitted from an AVO employee at the request of the editor. In it, it says The HRM and HR2 were introduced in 1946, so there must be some even older ones than mine out there.

Hope this has been helpful.

Steve