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Old 20th Jan 2019, 1:54 pm   #1961
Phil G4SPZ
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Default Re: AVO Multimeter survey

You’ll also see the Broad Arrow on O.S. trig points.
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Old 20th Jan 2019, 3:00 pm   #1962
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Default Re: AVO Multimeter survey

Yes perhaps I shouldn't refer to it as the NATO arrow.

All meters have the date in the four digit format.

Also at the bottom of the movement scale they have the writing

'B.S.F.G ACWEECO.LTD' and then 'REF No. 10S/10610'
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Old 20th Jan 2019, 5:15 pm   #1963
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Default Re: AVO Multimeter survey

I think i have heard it referred to as the WD (war department?) arrow, but the person might have been mistaken. On everything from batteries to spanners, often accompanied by the year of manufacture (which is useful.)

On many occasions i have borrowed a steel bar about 6' long, about an inch and a half in diameter, one end terminates in a wedge, the other a four-sided point. Despite the corrosion the year and arrow are still visible. It appears to be made out of some sort of unobtainium steel, is completely inflexible, quite sonorous and massively heavy- i use it in conjunction with a pivot block, for levering out small tree stumps. I think originally it was a tool for changing the links on tank/caterpillar tracks. Taken for granted for many years- but like many of the things we use it would be difficult to replace.

By comparison with the CE mark (or sometimes even the TUV mark!) the arrow effectively delivers the message- 'This is fit for purpose'

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Old 20th Jan 2019, 8:18 pm   #1964
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Default Re: AVO Multimeter survey

Serial number for the survey list


Avo 8 mk3 from a famous web 54204.267
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Old 21st Jan 2019, 7:07 pm   #1965
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Default Re: AVO Multimeter survey

My Dad`s AVO 8 mkII, owned from new. 78759-C-858
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Old 23rd Jan 2019, 5:49 pm   #1966
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Default Re: AVO Multimeter survey

Avo Type D 48A ser n 18025 - 1144 Printed on the scale card is the year 1949 .

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Old 23rd Jan 2019, 6:01 pm   #1967
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Default Re: AVO Multimeter survey

Hi Bob,

Thanks for the original Number from the 48A.
You never know, that Meter may still exist somewhere!
Although it is not on our Database unfortunately, I just looked.

Are you able to read the Serial Number from the Model D?
It should be immediately to the Left of the 1949 you mentioned, and it should begin with a D.





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Old 23rd Jan 2019, 6:34 pm   #1968
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Default Re: AVO Multimeter survey

Bob, I don't know how much you know regarding these, but as Ian says, the gist is that the Model D has found shelter from the weather in a box originally used for a Model 48A meter.
It won't therefore have any compatibility with the accessories provided, you need a Model 40, 47A, 47A(S) or 48A meter for that. There are loads of Model 40's knocking about, that would be the easiest to procure (especially the later ones).

Probably the most useful accessories are the DC current shunts, i think you have capacity for up to 480amps with an accuracy plus or minus 2%.

Dave
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Old 23rd Jan 2019, 7:43 pm   #1969
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Default Re: AVO Multimeter survey

Hi Ian and Dave

The Sn on the scale card is D104 - 1149. there is a ref number
deep below the scale front moulding 105 or 10S -10610

Thanks.
Bob.
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Old 23rd Jan 2019, 7:46 pm   #1970
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Default Re: AVO Multimeter survey

I have been looking at the database and see that one of mine is listed three times on page 8 lines 76, 77 and 78 but perhaps you have found these?

I also have three more that could be added:
Model 8 s/n 45836-c-456
Model 8 MkII s/n 105043-c-360
Model 8 MkIII s/n 65083-867
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Old 23rd Jan 2019, 9:57 pm   #1971
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Default Re: AVO Multimeter survey

Bottom left hand corner, is that the serial number or the part number? Reason I ask is that usually, this range of hand helds has the number on the right hand, stamped/pressed into the scale plate.

What do you think?
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Old 24th Jan 2019, 12:13 am   #1972
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From a famous web...

Avo 7 metal case with serial number 7109-3262
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Old 24th Jan 2019, 12:47 am   #1973
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Default Re: AVO Multimeter survey

Sinewave,

Post No. 1974 - That's a part number. You may find that there's a serial number indented into the scale plate at some point but the white covers the surface and there is no other filling of the characters. The serial number on some later Multiminors is like this.

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Old 24th Jan 2019, 2:00 am   #1974
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Default Re: AVO Multimeter survey

Sadly nothing on this. It's a shame as I wanted to enter this on the survey, but it's serial less. A model 71 I have has the number on a sticker, others are indented into the scale plate, but this one has nothing and will remain a mystery.
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Old 25th Jan 2019, 3:04 pm   #1975
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another 7mk2 metal case found on the internet

SERIAL 3418-A-367-M
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Old 26th Jan 2019, 3:07 pm   #1976
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Default Re: AVO Multimeter survey

With thanks to Studio263 who kindly donated to me an Avometer Model 7, serial No.39538-A-253.

This meter has some lovely history belonging previously to the RAE based at Farnborough. It has the aluminium rear casing and is still in perfect working order.

It comes with a set of orginal leads with the NSN and a case with the lettering ZD. 00207.

What a beautiful example of a mark 1 Avometer Model 7 this is.
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Old 27th Jan 2019, 12:20 pm   #1977
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Avo 8 mk3 find on a famous web metal battery cover

serial nº 37760.266
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Old 28th Jan 2019, 12:51 am   #1978
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Default Re: AVO Multimeter survey

And another, very close to the other one, Avo 8 MK3 baquelite case


Serial nº 37590.266
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Old 29th Jan 2019, 12:58 am   #1979
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Today i received my Avo 47 A, in perfect working condition, i will appreciate photos of the wooden box, inside, outside, front...

Serial number for the survey list is: 11203-543
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Old 29th Jan 2019, 1:56 am   #1980
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There is the same Avo 47A on the survey list (number 97 and 98 on Avo 47 section). And i think this one known, there is a few times the same Avo 47A on numbers 107-110
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