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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 1st Jan 2024, 11:22 am   #3261
WaveyDipole
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Default Re: AVO Multimeter survey

Don't think I have ever seen one of those before. Thank you for posting the details and pics.
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Old 1st Jan 2024, 11:30 am   #3262
AndyGilham
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Default Re: AVO Multimeter survey

Interestingly, there is another on Ebay at the moment.
But I don't need two!
Andy
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Old 1st Jan 2024, 2:14 pm   #3263
The Philpott
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Default Re: AVO Multimeter survey

Thanks Andy. As previously mentioned the damp probe as supplied with the meter has prongs that are supposed to be around 15mm apart, according to an ebay vendor i contacted.

(Mine is missing the special probe..)

Dave
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Old 9th Feb 2024, 1:47 am   #3264
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Default Re: AVO Multimeter survey

I have digital DA114 s/n 1048, a Nixie tube jobbie. Had this from new and still have the manual.

I have just replaced a dozen ERIE 30V 0.1MFD capacitors, a while back the decimal points that were supposed to be off were glowing slightly, this was caused by said capacitors, the worst was reading about 2M and the ‘best’ one only about 10M. Only other problem was the main IC a MC902 that failed early in it’s life, they sent me a ceramic looking replacement.
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Last edited by MeerKat; 9th Feb 2024 at 1:49 am. Reason: More detail
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Old 26th Feb 2024, 12:17 am   #3265
WilsonLaidlaw
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Default Re: AVO Multimeter survey

I have just bought another Avometer 8, this time a lovely condition (like new and little used) Mk.7. It was a real bargain at just £75. My current Avo 8 Mk6 sits in my French house and when I needed a meter last week to try and resurrect an old large format slide viewer, my Metex digital meter, which has had a dodgy power switch for years, completely died, with the switch self-disassembling.

My new to me Avo 8Mk7 came from a man who was an engineer, so apparently all tested before dispatch. As promised and unlike my previous Avometer purchases, a very dead Model 7 and Model 8 Mk.6 which had dead diodes, faulty solder joints and broken connections on the AC side, this one works perfectly. It does not have a case unfortunately and given my past experiences with AVOmeter and Megger cases smelling like a dead badger, I am reluctant to buy a second hand case. I may get a friend to make me a wooden box, as my woodworking skills are negative.

The original Avo test leads were missing the probes but I have found a new old stock set and bought them. However I am not a huge fan of these leads with the very long probes due to my arthritic tremor (worse since covid) and have bought from Amazon, a set of AMTOVL leads. These seem excellent quality and come with a large range of accessories from micro clip probes to large crocodile clamps and others plus a set of 8 different tips for the standard probes from near wholly shielded to around 2 cm exposed, in both plated and brass. The insulation is not quite as thick as the original rubber covered Avo leads but is CatIII graded to 1000V and a lot thicker than some leads I have seen. I can recommend them. I did have to remove the shields from the connection banana plugs but the plugs are a good tight fit in the meter.

The Mk.7 has labels on the side with "1067 M098299 8MK7/RS 000326" written on them. They look like factory labels. It was originally sold by RS Components whose logo is on the battery cover.

Wilson

Last edited by WilsonLaidlaw; 26th Feb 2024 at 12:40 am.
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Old 4th Mar 2024, 1:09 pm   #3266
Floejoe
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Default Re: AVO Multimeter survey

Hi there.

Just thought I would add my two AVO 8's to the rather extensive list.

1) AVO 8 Mk5, S/N 02521 8V/11/79 recently acquired and in very good condition.

2) AVO 8 Mk4, S/N 00095-84/570 the first 4 digits are difficult to read so maybe incorrect, no S/N on the scale just the casing.

Cheers,

Joe.
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Old 9th Apr 2024, 10:42 am   #3267
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Default Re: AVO Multimeter survey

One post moved to a new thread here:-

https://www.vintage-radio.net/forum/...d.php?t=210106
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Old 9th Apr 2024, 12:43 pm   #3268
pmmunro
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Default Re: AVO Multimeter survey

Thanks for the information Joe. It all helps to complete the picture.

PMM
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Old 2nd May 2024, 7:50 pm   #3269
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Default Re: AVO Multimeter survey

A new arrival here, Model 8 Mk III: 23142.865.

Had to give it a home from today's flea market: £15 in good shape with well used case and leads, seems working so far.

Paul
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Old 8th May 2024, 12:53 pm   #3270
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Default Re: AVO Multimeter survey

My Avo LRO - Low Resistance Avometer - (apparently rather rare), complete in case:
Serial no 252-440.

As the 4th ed Avo list shows only two, dated 1941, this may be the earliest example so far and presumably dates production from before 1940 as it's serial no 252.

I also have 3 AVO EA113 electronic (analogue) multimeters, but I'm not sure if they feature in the survey.

Just in case they are of interest:
7161-3-80 (1961?) - rarer black-front model.
2963-571 (1963?)
1265-570 (1965?)

-Jeremy
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Old 8th May 2024, 3:26 pm   #3271
Phil G4SPZ
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Default Re: AVO Multimeter survey

Quote:
Originally Posted by Pamphonica View Post
I also have 3 AVO EA113 electronic (analogue) multimeters, but I'm not sure if they feature in the survey.
You lucky fellow! I have just one, beautiful instrument. I’ll report its serial number later.
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Old 8th May 2024, 4:47 pm   #3272
The Philpott
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Default Re: AVO Multimeter survey

Post No.3270

Thanks Jeremy, yes, i'm only aware of those three Low Resistance Ohmmeters, all have 'surfaced for air' and become known in the last ten years.

They were advertised alongside the DC Avominor Type HR, which started to be produced around 1938, and i'd theorise that the LRO was around in 1940, possibly earlier.

I was pleased you were able to make use of the exploded photo of the switch assy.
The bloke who owns the third example is a member of the Golborne forum, and wasn't so lucky. It was already corroded but then took a steep dive from an altitude of 6' onto concrete, courtesy of whoever delivered it to his premises.

As i recall mine had cracked glass, a dry joint and needed the switch leaves tweaking and polishing. The movement, i think, is a one-off- if they go o/c things could get interesting. In my case i would probably have to cannibalise and adapt one from a Type HR meter!

Dave
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