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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 7th Sep 2023, 4:36 pm   #3241
millwright2309
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Default Re: AVO Multimeter survey

Quote:
Originally Posted by Superscope View Post
Quote:
Originally Posted by bobbob! View Post
The sticker on the back states that it was supplied by Universal Instrument Services, Leire, Leicestershire on 13/09/1979,
so I guess that's as good a date as you'll find on one of these! At least, it wasn't made after that...
Dating Multiminors has always been a bit of a problem, and has been a pain for the Survey.
Made even more difficult when it came to light recently that Avo supplied replacement
Mk 5 Movements and Scaleplates for repairs to older Mk's.

Meaning a Multiminor displaying Mk 5 on its Scaleplate is not necessarily a Mk 5 and
other features might be required to actually identify what it is.
One assumes this could also have been the case previously with other Mk's.

Now, very little is cast in Stone with Avo meters as everybody knows, but is it possible that
Universal Instrument Services supplied the Multiminor Second Hand?
The reason I ask, is that it is unlikely (but not impossible of course) the Multiminor was still
being made or supplied in 1979.
The Multiminor was replaced around 1970 by the 70 Series Meters.
It could of course also have been sitting on a Shelf for years and sold as NOS.

Quote:
Originally Posted by millwright2309 View Post
Hi, universal avometer model 7, number 40632-A-353 with square batteries installed.
Your Meter as you probably know will be a Mk II from 1953.
By square Batteries, I assume you mean the Two 4.5v Cycle Batteries, or do you mean the
single 1.5v Battery?

Quote:
Originally Posted by millwright2309 View Post
I am interested in its value and will sell to a collector if anyone in GTA is interested.


As a general rule.

Values of course will depend on it's condition and supplied accessories.
I'm not sure what the values are for Canada, but for the Uk, If its scruffy with chips and
scratches and doesn't work at all, then it has very little value.
You would struggle to get 10 for it here in the Uk for spares.

If it is in very good cosmetic condition with a Case and leads (even with missing Prods) and
it at least shows signs of life, you might be lucky and get around 25-30.
Although I don't often see Model 7's get that high unless they really are in good shape.

The Model 7 for some reason is not a particularly sort after Avometer and that reflects in the
price.

Some photos would help to gauge general condition.



Ian
It has the square 1.5 volt battery.
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Old 7th Sep 2023, 6:08 pm   #3242
The Philpott
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Default Re: AVO Multimeter survey

Avominor Protimeter s/n- 545-558 !

How many do we know of now....would it be 6 including the ghastly steampunked one that featured on etsy some time ago?

I'll start a separate thread with images.

Dave
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Old 8th Sep 2023, 9:01 am   #3243
Superscope
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Default Re: AVO Multimeter survey

Quote:
Originally Posted by The Philpott View Post
Avominor Protimeter s/n- 545-558 !

How many do we know of now....would it be 6 including the ghastly steampunked one that featured on etsy some time ago?

I'll start a separate thread with images.

Dave
Yes, it is indeed the sixth one we have listed, including the butchered, sorry, Steampunked etsy one.

One assumes this one is probably towards the end of production.


Although we have Six listed, it is not clear if these all actually still survive.

Two of the numbers were provided by Andy Gillham from Avo and I'm not sure if these
were surviving Meters or just happened to appear on historical documentation.



Ian
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Old 9th Sep 2023, 2:48 am   #3244
millwright2309
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Default Re: AVO Multimeter survey

My model 7 and a Hoyt AC/DC volt meter.
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Old 9th Sep 2023, 2:51 am   #3245
millwright2309
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Default Re: AVO Multimeter survey

The batteries that were in my model 7, bought in August this year 40632-A-353, AC/DC seems to be working well.
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Old 9th Sep 2023, 8:47 am   #3246
The Philpott
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Default Re: AVO Multimeter survey

Wow! I believe that sulphur fumes from the rotting rubber test leads can blacken the switch contacts inside the avo, so best kept separate! Does the AVO 7 have a serial number at the bottom of the scaleplate?

Dave
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Old 9th Sep 2023, 4:10 pm   #3247
millwright2309
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Default Re: AVO Multimeter survey

40632-a-353
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Old 9th Sep 2023, 7:21 pm   #3248
bobbob!
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Default Re: AVO Multimeter survey

AVO Multiminor Mk. 5 : 014205
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Old 14th Sep 2023, 6:33 pm   #3249
Chrispy57
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Default Re: AVO Multimeter survey

Avo EM272, part number 5170-425, serial number 175771.

Sadly this faulty unit has been steampunked (sensitively I hope) into a Zener diode tester, as described in a post under the Homebrew Equipment section of the Forum!

Cheers
Chris
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Old 19th Sep 2023, 2:43 pm   #3250
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Default Re: AVO Multimeter survey

Just taken possession of:

AVO Model 8, Mk II.

Serial No: 114874-C-1160.

Thanks for letting me have it, Glyn.
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