AVO Low resistance ohmmeter 1941

[The Philpott]

Greetings to you all, I am requesting that if anyone has any information on the early AVO LRO could they confirm! I have bought one, which is the same size as the earlier DC only avominor, but with a modified front panel and Belling Lee terminals on top. Google images has a pic of it now. It is serial number 370-441, and catalogue ads. from 1939 list it as 'cancelled', which infers to me that however many had been made at that point were withheld in case the military needed them for defeating Herr Schickelgruber.

I have made this meter work properly, but it is feeling rather lonely and I may have to make the decision to withdraw it from service if it turns out to be the only one in existence! If anyone could furnish me with serial numbers of any of it's companions I would be grateful. In the catalogue ad I have mentioned, the other unit listed as 'cancelled' is the HR DC Avominor - which does not appear to exist AT ALL.

I have asked Megger, who politely replied however it does appear that the Luftwaffe, paper recycling and the process of 'moving house' has compromised their early records to the extent that they know nothing of this meter. Which is fair enough really.

Thankyou.

[Refugee]

Would this Megger branded high voltage and ohms one be from the same era?
http://golbornevintageradio.co.uk/forum/...p?tid=3637

[AlanBeckett]

Pictures would be good.

Alan

[Refugee]

I dropped the hint about the photos

[Stockden]

The pictures are here: http://www.richardsradios.co.uk/avolowohms.html

[Mike Watterson]

" The meter takes a 1.5V battery which would have been 'C' size"
Actually looks like a "B" size battery, which are STILL inside the 4.5V flat packs (Panasonic, GP, Varta, and various mainland Europe suppliers)

It doesn't look like an "A" cell size? B cells were in all Grid bias packs and all non-layer HTpacks.

[AlanBeckett]

Ah, so, a modified DC AVOMinor.
I suspect the Battery was originally a Cell which you can get from a Cycle Battery - see attached.

Alan

           

[Excessive Leakage]

I remember seeing it on eBay and was considering a bid.

An interesting item indeed!

Adam

[Terry]

I suspect the Battery was originally a Cell which you can get from a Cycle Battery - see attached.

I'm glad you included a picture, Alan, because this is what most people would regard as a Cycle Lamp battery and it's a tad larger! (In fact it is equivalent to half a lantern battery.)



The one you showed, equivalent to an Ever Ready 1829, was mainly used in flat torches - presumably designed to be a more comfortable fit in the pocket than a long round one. 

[AlanBeckett]

Yes, I remember both sorts back in my youthful cycling days.
I also remember the cost and pathetic output

Alan