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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 5th Dec 2020, 4:09 pm   #2741
Superscope
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Default Re: AVO Multimeter survey

Well, that blows that idea then!

How did you know that Mike ?

I can't track down exactly where those Addresses are (or were).
Winder House and Avocet House are meaningless today, as the
buildings if still standing will have been renamed.


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Old 6th Dec 2020, 3:23 pm   #2742
micheal
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Default Re: AVO Multimeter survey

Winder House is in Douglas Street and Avocet (named after the bird) House is in Vauxhall Bridge Road. I live about ten miles south of London and so London is my back garden.

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Old 6th Dec 2020, 3:29 pm   #2743
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Default Re: AVO Multimeter survey

P/S Avocet House is now a block of flats but Winder House may still be there,the buildings look quite old but with out a building number hard to locate.

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Old 8th Dec 2020, 7:31 pm   #2744
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Default Re: AVO Multimeter survey

I have a map of the various locations in London for Acweeco, and I can confirm that a shadow factory did indeed exist in Stansted! How do I know, well I have photographs of it and various documents. I have also spoken to the son of the man that opened the site and ran it!

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Old 8th Dec 2020, 7:39 pm   #2745
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Default Re: AVO Multimeter survey

Well done Andy, do you have a timeframe and location?
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Old 8th Dec 2020, 7:49 pm   #2746
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Default Re: AVO Multimeter survey

Gathering that information! But essentially it was a war dispersal factory and I believe yes between 1942 and 1947

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Old 8th Dec 2020, 8:01 pm   #2747
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Default Re: AVO Multimeter survey

Excellent news Andy,

I assume the Shadow Factory was set up during the War ?
Probably not clever to have everything centered in London during that period.

Are you able to confirm that Vauxhall Bridge Rd was acquired in 1939 ?

What was it's location in relation to Douglas Street ?
Were they close enough to be treated as a single location ?




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Old 9th Dec 2020, 9:24 am   #2748
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Default Re: AVO Multimeter survey

The roads are parallel to each other if you look at A to Z map.
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Old 9th Dec 2020, 4:10 pm   #2749
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Yes they are, but Vauxhall Bridge rd is much longer, it's about 2Km long.
Douglas Street is around 300m as I remember, so much shorter.

So depending on exactly where each Site was located on their respective Roads,
they could be meters apart, or Km's apart.

Probably not the most important thing to know, but would be interesting.




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Old 9th Dec 2020, 5:02 pm   #2750
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Default Re: AVO Multimeter survey

Is there a known date of the change in the Model 2, from having in large writing, Ohms above the scale and Amperes and Volts below, to the scale where ohms is only to the side of the ohms range, but still retaining the Amperes and Volts written below?
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Avometer, vintage Fluke and Marconi collector.

At 144-146.00Mhz, keeping one wavelength apart.
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Old 10th Dec 2020, 9:53 am   #2751
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Default Re: AVO Multimeter survey

There are a number of Sutle changes going on with the Scaleplates,
especially the early Meters, so it is difficult to pin down specific Dates
as there is just not enough Data.

The move of the Ohms wording to the right of the Scale, instead of the
middle Top location, seems to have happened late on in the Model 2
production.
Based on the little Data I do have, I would guess it will be post 1933/4.






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Old 15th Dec 2020, 1:15 pm   #2752
Andrew Sinclair
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Default Re: AVO Multimeter survey

These two AVO meters were given to the Fareham radio club. (See items offered thread)

AVO 7 serial number 7146-24947
Movement has a horseshoe magnet and the bimetallic temperature compensator.

AVO 8X serial number 72079-C-358
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Old 28th Jan 2021, 2:09 pm   #2753
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Default Re: AVO Multimeter survey

First two additions for 2021
Testmeter no1(high sensitivity)
serial 1879 567
made in Dover
and
Avo Model8 Mk3
serial 58487 567
made Vauxhall Rd
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Old 28th Jan 2021, 2:12 pm   #2754
barrymagrec
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Default Re: AVO Multimeter survey

Quote:
Originally Posted by Barnmead View Post
First two additions for 2021
Testmeter no1(high sensitivity)
serial 1879 567
made in Dover
and
Avo Model8 Mk3
serial 58487 567
made Vauxhall Rd
Vauxhall Bridge Road

Exactly opposite my Grandmothers house...
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Old 18th Feb 2021, 10:05 am   #2755
rcw88rcw88
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Default Re: AVO Multimeter survey

Just joined after being directed to this fascinating site by Richards Radios, I bought an AVO 8 Mk5 last week after an attack of nostalgia, but I have good reasons for having a working one. It's a bit grubby, lacking only the case front, and the battery compartment clip, got some new original leads from another vendor.
I've got some photos of the clip courtesy of Richards Radios, so I can model a replacement and 3D print it.
I also realised that the replacement battery carrier for the alternative 15V solution is also a fairly simple 3D print, Farnell list it, but have none in stock.

Serial number 01514 8V/2/80.
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Old 18th Feb 2021, 4:04 pm   #2756
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Default Re: AVO Multimeter survey

RCW88,

Welcome to the forum and to our little sub-section.

If you need any information which you don't find here, one of us may well be able to provide it. Parts for the Model 8 Mk V are, of course, no longer avaialable from Megger, but used and 'new old stock' parts are not too rare.

You are probably the forum member geographically closest to the childhood home of Donald MacAdie, who 'invented' the Avometer. (I prefer the term 'developed'). He was born in the Parish of Halkirk, Caithness, in 1871 to a crofting family.

PMM
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Old 19th Feb 2021, 10:28 am   #2757
rcw88rcw88
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Quote:
Originally Posted by pmmunro View Post
RCW88,

Welcome to the forum and to our little sub-section.

If you need any information which you don't find here, one of us may well be able to provide it. Parts for the Model 8 Mk V are, of course, no longer avaialable from Megger, but used and 'new old stock' parts are not too rare.

You are probably the forum member geographically closest to the childhood home of Donald MacAdie, who 'invented' the Avometer. (I prefer the term 'developed'). He was born in the Parish of Halkirk, Caithness, in 1871 to a crofting family.

PMM
Thank you, Now that is quite remarkable, drove past Halkirk yesterday - with good reason I might add, and previously looked at a house there. Halkirk is absolutely tiny, in population terms, and I'm surrounded by crofts in the hills just west of the A9.

I've found manuals, calibration guides, and cleaning calibration videos, when I last used one, and lusted after one, the Internet didn't exist..
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Old 22nd Feb 2021, 11:27 am   #2758
rcw88rcw88
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Default Re: AVO Multimeter survey

Quote:
Originally Posted by rcw88rcw88 View Post
Just joined after being directed to this fascinating site by Richards Radios, I bought an AVO 8 Mk5 last week after an attack of nostalgia, but I have good reasons for having a working one. It's a bit grubby, lacking only the case front, and the battery compartment clip, got some new original leads from another vendor.
I've got some photos of the clip courtesy of Richards Radios, so I can model a replacement and 3D print it.
I also realised that the replacement battery carrier for the alternative 15V solution is also a fairly simple 3D print, Farnell list it, but have none in stock.

Serial number 01514 8V/2/80.
Upon opening the back got that distinctive cooked PCB aroma - both the Printed Resistor, part number 6120-284 and Printed Circuit Shunt 6120-285 are toast, literally, with burnt tracks and gaps
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Old 23rd Feb 2021, 1:39 pm   #2759
rcw88rcw88
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Default Re: AVO Multimeter survey

As I bought the skinny 15V battery consisting of a plastic wrapped stack of LR54's which of course doesn't fit the battery compartment at all, I made this carrier, fits in an AVO 8Mk5 and should fit most versions. Created and modelled with openSCAD. slide the battery in from the end, it fits either way around and there's a little hand hold to pull it out.

Hopefully someone can use this to avoid battery depression syndrome where it drops to the bottom of the compartment, and my fingers are way too big to pull it out unassisted.
Attached Files
File Type: zip AvoMod8MkV battery holder.zip (196.8 KB, 14 views)
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Old 23rd Feb 2021, 1:39 pm   #2760
Xyience
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Default Re: AVO Multimeter survey

Another one for the database.

Model 7 Mk II 924-A-1261F

This has a metal case finished in grey (?) crackle paint.

The back of the scale has 3 handwritten dates from 62-64 which must be from servicing or calibration. One of the dates includes the engineers name.

Modern product designers should take a leaf out of the AVO book - this thing is a beauty and exudes quality.
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