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Vintage Test Gear and Workshop Equipment For discussions about vintage test gear and workshop equipment such as coil winders.

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Old 18th Sep 2011, 6:08 pm   #701
dseymo1
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Default Re: AVO Multimeter survey

Model 47A (Admiralty version), serial 13450-144 now offered below for spares - sadly badly water damaged, but another one for the record
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Old 20th Sep 2011, 4:05 pm   #702
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Quote:
Originally Posted by dseymo1 View Post
Model 47A (Admiralty version), serial 13450-144 now offered below for spares - sadly badly water damaged, but another one for the record
Sent you a P.M.

Paul.
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Old 22nd Sep 2011, 9:10 am   #703
noble kiwi
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Default Re: AVO Multimeter survey

Two model 40 from down under. 6164-B1051 and 180-B-461.F. They are different in several detailed respects.

Trevor.
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Old 25th Sep 2011, 1:10 pm   #704
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Default Re: AVO Multimeter survey

Two more: 54292-84/971 (model 8 mk 4)
20908-945 (AD Patt 47A) complete with original battery.
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Old 30th Sep 2011, 2:26 pm   #705
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Default Re: AVO Multimeter survey

No 32, Avo Universal meter, i have approx 50, this one has Serial No 10945-36, 10 volt and low ohms scales marked in red, works great....regards....Alan.
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Old 30th Sep 2011, 9:27 pm   #706
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Default Re: AVO Multimeter survey

Antony,

Is the battery for your 47A the original type or the actual original supplied with the meter when new? A photograph would be interesting in either case.

Alan,

Does No 32 mean the 32nd meter in your collection and is it a Universal Avominor? If it is a Universal Avominor the serial number could possibly indicate a meter made in 1936 but I am a bit short of serial numbers from this period to establish a pattern.

Again a photograph would be interesting, especially if you can get a well focused image of the scaleplate.

PMM.
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Old 1st Oct 2011, 7:34 pm   #707
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Hi PMM,
Not sure about the Battery as the date on it say's 19th July 1973, anyway here's a picture of the said beast !

Paul.
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Old 2nd Oct 2011, 1:39 pm   #708
phasedout
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Default Re: AVO Multimeter survey

Hi Pmm, the date i suspect is 1936, its like a mini Avo shop here, i have 50 Avos in my collection, i am having problems with uploading pics but soon as its resolved i will post a picture of this meter, which is a Universal AvoMeter...regards....Alan.
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Old 10th Oct 2011, 9:39 am   #709
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Default Re: AVO Multimeter survey

Hi My AVO is a model 8 Mk111. Serial No 17066.S65. I have been using it for 30years+. Still going strong, I mean the AVO not me. Regards scopedon
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Old 10th Oct 2011, 2:44 pm   #710
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Default Re: AVO Multimeter survey

My latest AVO acquisition is a Model 7, 71047-A40931 which I interpret to be a relatively late meter of this type, made in October 1947? £4.99 from eBay.
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Old 10th Oct 2011, 6:09 pm   #711
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Scopedon,

Could that serial number be 17066.565? There would not normally be an 'S' in that position.

Phil,

Thanks for the information; your serial number is consistent with October 1947. Do you know if your meter has a block magnet movement or the earlier type with a horseshoe magnet? The design changed just about his time.

PMM.
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Old 11th Oct 2011, 9:55 pm   #712
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Default Re: AVO Multimeter survey

AVO 7 bought just a few days ago in original cardboard box still wrapped in a plastic bag which has been taped with some old tape that now has gone brownish.

The manual is still in the bag with the meter and all looks pristine, including the leads and clips, but the box has been torn open quite roughly by the seller - but I got the box too and it has a label on the outside with the same serial number as the meter, which is: 02226 7/11/77.

It might not be as old as some think, but it is just what I needed!

The meter movement is very nicely dampened and there are no corrosion or damages that I can see through the plastic bag.

I just hope these instruments were shipped without natteries in the battery compartment!

How much did I pay then? GBP £30!! Quite a bargain!
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Last edited by Dekatron; 11th Oct 2011 at 10:00 pm. Reason: Added pictures - which I forgot....
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Old 11th Oct 2011, 10:43 pm   #713
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Default Re: AVO Multimeter survey

Hi

My trusty AVO is a 8V / 5 / 76 No. 05216


Pete
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Old 12th Oct 2011, 8:08 am   #714
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Default Re: AVO Multimeter survey

Model 8X MkIII (Panclimatic),
serial number appears partly defaced, reads 6625-99-943-15xx.

Acquired by myself from Mountain Breeze Ltd, via their engineer, when bought out, about 1990.

Tony
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Old 12th Oct 2011, 12:37 pm   #715
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Tony,

That is a NATO Stock number, not the serial number. The serial number should be on the scaleplate of a Model 8 Mark III. On many military meters it is on the lower left edge, rather than the right hand side as on the commercial models.

It will be of the form XXXXX-mmyy where m is the month and y the year of manufacture.

PMM.
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Old 12th Oct 2011, 4:50 pm   #716
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Ahh, yes, on the scale it says: Model 8 No. 47532-10,66.

Wondered about that.

Tony
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Old 13th Oct 2011, 4:15 am   #717
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Default Re: AVO Multimeter survey

Hi, All. Anyone passing up an AVO in a second hand shop should think twice. Maybe she'd swap it for something you have. Check out Farnell or RadioSpares online prices for the current ones, assuming they still have them, not long ago they were SURPRISINGLY expensive.
My first AVO was bought new for $110 AU when I was an apprentice, c.1966, it's an 8 MkIII Ser 16574.565 also have 8 MkIII 33977.166 and a Test Set Multirange No.1 High Sensitivity 6625-99-105-7050 1134.167.
I have at least one more Model 8, and at least two solid state ones which came from the tip, hiding somewhere, an in-circuit transistor tester (hand held) which I bought new also when an apprentice. Anyone who wants to donate me an AVO valve tester, I'm sure I'd find room for it somewhere. I had a bent one from the tip but an apprentice talked me into selling it to him cheap. Regretted it ever since, particularly as he left in a hurry at the end of his time. The Multirange No.1 mentioned above is a metal-clad similar to the Model 8, and has a higher high voltage range - Military. Also I think I have a model 9 from the tip somewhere. (Can't find ANYTHING since the February Floods - didn't get drowned, but new concrete slab behind blocked the normal drainage path and had a foot of water through the place.) I also have a 50A shunt for a Model 8 which cost nearly as much as the new meter.

Cheers,
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Old 13th Oct 2011, 1:37 pm   #718
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Technomatic,

From what you write it seems possible that you haven't heard that Avometer (Model 8 Mark 7) production ended nearly two years ago. The reason given was that the jewelled pivots, which came from Switzerland, were no longer available.

At the end of production, the cost in the UK was around £900 and it had been rising much faster than general inflation for some time. The movement of the Mark 6 & 7 was very similar to the Mark V but the last two variants used rigid pcbs with wire interconnection and eliminated the flexible printed circuits of the Mark V. These changes must have significantly reduced the cost of production.

I understand that AVO (Megger) is now owned by an American company and I suspect that they decided that the Avometer was too old a concept for their product image.

PMM.
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Old 13th Oct 2011, 7:24 pm   #719
Philips210
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Default Re: AVO Multimeter survey

Hi.

My Model 8 Mk3 has the serial number 105117 and dated October 1969 (1069).
I also have a Model 7 (Panclimatic), serial number 95938-A dated February 1965 (265)

Regards
Symon.
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Old 15th Oct 2011, 10:07 pm   #720
Phil G4SPZ
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Default Re: AVO Multimeter survey

Quote:
Originally Posted by pmmunro View Post
Phil,

Thanks for the information; your serial number is consistent with October 1947. Do you know if your meter has a block magnet movement or the earlier type with a horseshoe magnet? The design changed just about his time.
Peter,

Thank you for that. I think this meter has never been opened, and as it seems to work on all ranges and the battery compartment is pristine with no corrosion (the first instrument in such condition that I've managed to obtain from said source), with all due respect I'd prefer not to open it up to find out.

Is it possible to ascertain the magnet type from a detailed visual external inspection?

Phil
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