UK Vintage Radio Repair and Restoration Powered By Google Custom Search Vintage Radio Service Data

Go Back   UK Vintage Radio Repair and Restoration Discussion Forum > Specific Vintage Equipment > Vintage Test Gear and Workshop Equipment

Notices

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

Reply
 
Thread Tools
Old 10th Oct 2018, 11:11 pm   #1761
Sinewave
Heptode
 
Sinewave's Avatar
 
Join Date: May 2016
Location: Oxfordshire/Bucks borders, UK.
Posts: 502
Default Re: AVO Multimeter survey

I feel your pain.

Lately I have seen enough of these 'steampunk' articles.

The prices they want for them is utterly ridiculous.
__________________
Avometer and vintage Fluke collector. Metrology addict.
Sinewave is offline   Reply With Quote
Old 11th Oct 2018, 9:25 am   #1762
Superscope
Pentode
 
Join Date: May 2017
Location: St Austell, Cornwall, UK.
Posts: 115
Default Re: AVO Multimeter survey

Hi Group,

Now here is an interesting one.
Could this be the youngest Model 7 ?

Absolutely Mint, even has both it's Rubber PF Socket Dust Plugs.
AVO Seal still intact, so probably never been opened.

Label on the side like a 8MkV
MOD7/2 2/87 (Feb 1987)

Latest Date in the Survey for Model 7's is 1977 and there are several from this Year.
I have previously seen a 1978 Model 7, but this one Trumps it by 9 Years!

Anybody have anything younger in their collections?

Ian
Superscope is offline   Reply With Quote
Old 11th Oct 2018, 11:31 am   #1763
The Philpott
Octode
 
Join Date: Aug 2016
Location: Colchester, Essex, UK.
Posts: 1,326
Default Re: AVO Multimeter survey

The terminology of steampunk is morphing, 'upcycled' is becoming 'saved'- this is disconcerting because people will be led into thinking that by buying contraptions they are doing their bit to commemorate cultural/technical history.

The Model 4, i regard as 'finished' now, the original leather strap was present but unsafe..replaced it. Originality has it's limits..

Dave
The Philpott is online now   Reply With Quote
Old 11th Oct 2018, 3:10 pm   #1764
Barnmead
Tetrode
 
Barnmead's Avatar
 
Join Date: Dec 2002
Location: Norfolk, UK.
Posts: 81
Default Re: AVO Multimeter survey

Superscope's invitation prompted me to look at my model 7s and alas cannot beat that though as you will see from my model 40 list I do have a 40/7/78 instrument.

47A 8067-B-0342 Bakelite
40mk1 40485-642 Aluminium black crackle
40mk1 417599-1146 Aluminium mottled grey
40mk2 13071-B-956 Bakelite
40mk2 27852-B-366 Bakelite
40mk2 ?121 40/6/70 Bakelite
40mk2 91517 40/12/75 Bakelite
40mk2 87647 40/7/78 Bakelite
__________________
Richard
Barnmead is offline   Reply With Quote
Old 12th Oct 2018, 1:14 pm   #1765
Superscope
Pentode
 
Join Date: May 2017
Location: St Austell, Cornwall, UK.
Posts: 115
Default Re: AVO Multimeter survey

Hi Richard,

Can I just confirm some of those Numbers with you?
The Database has pulled up some Questions!

40mk1 40485-642 Aluminium black crackle

Is this possibly the same Meter reported on Thread #1274
The number there was 40185-642
One digit different which seems coincidental, so thought it better to check.

40mk2 91517 40/12/75 Bakelite

Is this possibly the same Meter reported on Thread #1110
The number there was 941617
A few similarities in the numbers so again, thought it better to check before entering them in as New Numbers.


The extra discriptions I think are very useful and informative.
I will try to work out a neat way of incorporating this info into the Survey List in the Future, although at the moment,
this infomation wasn't widely reported in past, so is not generally available.


Ian
Superscope is offline   Reply With Quote
Old 13th Oct 2018, 10:35 am   #1766
Barnmead
Tetrode
 
Barnmead's Avatar
 
Join Date: Dec 2002
Location: Norfolk, UK.
Posts: 81
Default Re: AVO Multimeter survey

Hi Ian
Apologies, Looking more closely I see that I that i had misread the the 1 as a 4 because it has a pronounced downstroke correct number is 40185-642 as stated previously.


1975 meter has a side label so not so clear but on second look I think 91617 is more likely.

The black labels on later instruments sometimes very difficult to read as the printing has worn away.

Sorry for confusion.
__________________
Richard
Barnmead is offline   Reply With Quote
Old 14th Oct 2018, 10:20 pm   #1767
Sinewave
Heptode
 
Sinewave's Avatar
 
Join Date: May 2016
Location: Oxfordshire/Bucks borders, UK.
Posts: 502
Default Re: AVO Multimeter survey

Quote:
Originally Posted by Sinewave View Post
I've just added another one to the collection, another Avo 8 Mark 7. Now, the difference with this one, which is why I wanted it, is that it's a much later mark 7, identified by the modern Avo badge and the Cat 3 markings.

But, I don't recognise the serial number format, so am having difficulty dating this one. It's nothing like the other mark 7s I have in format.

I came in a lovely modern vinyl case which appears to be velvet lined, with the more modern AVO badge on it. Only down side of the case is the buckle is broken.
So, what do we think? November 2002?
__________________
Avometer and vintage Fluke collector. Metrology addict.
Sinewave is offline   Reply With Quote
Old 17th Oct 2018, 10:01 am   #1768
Superscope
Pentode
 
Join Date: May 2017
Location: St Austell, Cornwall, UK.
Posts: 115
Default Re: AVO Multimeter survey

Well anything is possible of course, but it wouldn't really make any sense,
as it would have been just as easy to have printed 1102 at the end, following the normal tradition of abbreviated Dates.

It is more likely that your particular Mk VII simply didn't have the Date attached, as is very common among the Mk V's.

The only person I can think of, who might be able to shed any definitive light on this is AndyGilham (if he reads this), if
by any chance he is able to locate any achieve manufacturing Data at Megger. It would definitely have been recorded
back in the Day, but I'm sure Andy would have told us, if he had found Serial Number Data.

Sadly, British industry is notorious for having Binned Manufacturing Records years ago having
been deemed worthless and a Waste of valuable Space to keep.


Just my thoughts.

Ian
Superscope is offline   Reply With Quote
Old 22nd Oct 2018, 1:57 pm   #1769
josewan
Diode
 
Join Date: Oct 2018
Location: Curitiba-PR, Brazil.
Posts: 2
Default Re: AVO Multimeter survey

Hello all well. I am new to the group and want to register my two AVO. Avometer 8 MK III N 96477 469. Avometer 8X MK III (Panclimatic) N 97230 569. All worked perfectly. I apologize for grammar mistakes because I do not speak English and I'm using the Google translator.
josewan is offline   Reply With Quote
Old 22nd Oct 2018, 4:53 pm   #1770
The Philpott
Octode
 
Join Date: Aug 2016
Location: Colchester, Essex, UK.
Posts: 1,326
Default Re: AVO Multimeter survey

Thankyou for your contribution, josewan. I wonder if those meters from April and May of year 1969 may have been originally bought at the same time. I am glad they are still working!

Dave
The Philpott is online now   Reply With Quote
Old 26th Oct 2018, 1:32 am   #1771
josewan
Diode
 
Join Date: Oct 2018
Location: Curitiba-PR, Brazil.
Posts: 2
Default Re: AVO Multimeter survey

They may have been bought at the same time, but not by the same person. The first one was sent to the USA, because there is a label of an American company, and then it came to Brazil. The second was bought by a Brazilian telecom company.
josewan is offline   Reply With Quote
Old 31st Oct 2018, 9:09 pm   #1772
The Philpott
Octode
 
Join Date: Aug 2016
Location: Colchester, Essex, UK.
Posts: 1,326
Default Re: AVO Multimeter survey

A Universal Avominor without a date..

No. U.17848

Unusual.. The facia moulding (pic 2) is the type which has smaller legends which are more deeply incised. The scale plate is the less bold type, (slightly less easy to read, typical on early meters but sometimes used on later ones) and the high voltage bobbins are the type which have patent numbers showing on their paper wrappers. The rectifier is the smaller type which is pear shaped and has (thin) coloured wires. It's clear from stripped threads and missing screws that i am not the first visitor, and it could be the case that an early movement is sitting in a later meter. If not, could anyone index meter 17848 against theirs to give an approximate date of manufacture? I am thinking early 1935. There is nothing to indicate that it is a 'special', it is totally bog standard.

Dave
Attached Thumbnails
Click image for larger version

Name:	DSC00893.JPG
Views:	25
Size:	125.1 KB
ID:	171914   Click image for larger version

Name:	DSC00895.JPG
Views:	26
Size:	125.5 KB
ID:	171915   Click image for larger version

Name:	DSC00896.JPG
Views:	24
Size:	130.4 KB
ID:	171916   Click image for larger version

Name:	DSC00897.JPG
Views:	23
Size:	126.2 KB
ID:	171917  
The Philpott is online now   Reply With Quote
Old 31st Oct 2018, 10:04 pm   #1773
Superscope
Pentode
 
Join Date: May 2017
Location: St Austell, Cornwall, UK.
Posts: 115
Default Re: AVO Multimeter survey

Hi Dave,

I had a look in the Database and the nearest I can come up with, which
have Dates and the Five Number Format are the following:

10755-34
U 23115-36
U 23187-36
U 22666-35

I can only go by what was reported, so no idea if 10755 has a preceding U
at the front. AVO Minors are not my strong point.
It was reported on Post 229 Page 12, but looks like the Poster never came
back and that was their only Post.

Based on the above, I think your 1935 estimate is probably spot on.


Ian
Superscope is offline   Reply With Quote
Old 31st Oct 2018, 10:10 pm   #1774
Superscope
Pentode
 
Join Date: May 2017
Location: St Austell, Cornwall, UK.
Posts: 115
Default Re: AVO Multimeter survey

Dave,

Had a second thought!

Based on the Numbers we have, looks like production was running at about
1000 Units a Month give or Take.
That would make yours more likely Late 1934.
Probably October-ish.

I need to concentrate more with simple Math.


Ian
Superscope is offline   Reply With Quote
Old 31st Oct 2018, 10:58 pm   #1775
The Philpott
Octode
 
Join Date: Aug 2016
Location: Colchester, Essex, UK.
Posts: 1,326
Default Re: AVO Multimeter survey

Thanks Ian, that's just what i was thinking, Oct/Nov '34 or thereabouts! Rectifier looks later.

Dave
The Philpott is online now   Reply With Quote
Old 1st Nov 2018, 12:12 am   #1776
Refugee
Dekatron
 
Refugee's Avatar
 
Join Date: Apr 2012
Location: Worksop, Nottinghamshire, UK.
Posts: 3,594
Default Re: AVO Multimeter survey

I have got what looks like a lovely multiminor Mk5 98093.
I have done my quick blood red tinting trick to reveal the serial number for purists.
If anyone has an internal photo of the movement it would help me as it needs to come apart. The pivots are floating loose however there is continuity and some in the movement life when terminals are touched on a diode tester. I will start a new thread some time in the next few weeks.
Attached Thumbnails
Click image for larger version

Name:	IMG_0167.jpg
Views:	38
Size:	69.9 KB
ID:	171938   Click image for larger version

Name:	IMG_0164E.jpg
Views:	37
Size:	25.1 KB
ID:	171939  
Refugee is offline   Reply With Quote
Old 1st Nov 2018, 11:05 am   #1777
Superscope
Pentode
 
Join Date: May 2017
Location: St Austell, Cornwall, UK.
Posts: 115
Default Re: AVO Multimeter survey

Refugee,

Thanks for the new Serial, but I have to ask,
What is your Blood Red Tinting Trick?

Ian
Superscope is offline   Reply With Quote
Old 1st Nov 2018, 12:19 pm   #1778
micheal
Triode
 
Join Date: Mar 2007
Location: Croydon, London, UK.
Posts: 32
Default Re: AVO Multimeter survey

Thanks Ian, that's just what i was thinking, Oct/Nov '34 or thereabouts! Rectifier looks later.

That is a later type case which i think did not appear until the mid to late fourtys.

Mike
micheal is offline   Reply With Quote
Old 1st Nov 2018, 12:45 pm   #1779
The Philpott
Octode
 
Join Date: Aug 2016
Location: Colchester, Essex, UK.
Posts: 1,326
Default Re: AVO Multimeter survey

Mike, it's interesting you should say that, i did wonder if it was a 'marriage' since i have a meter from 1945/46 with that style of moulding. The movement has most certainly been taken out at some point. The cardboard rear cover and instruction plate look contemporary with mid forties. There is no sign that those metal straps you see at the rear on earlier meters were ever fitted. There is no red 'fly speck' on the needle though i cannot glean anything from this since it seems on the Model 1 this feature was fitted rather randomly through the production (and i suspect it sometimes flew off in later use!)

Dave
The Philpott is online now   Reply With Quote
Old 1st Nov 2018, 4:47 pm   #1780
Refugee
Dekatron
 
Refugee's Avatar
 
Join Date: Apr 2012
Location: Worksop, Nottinghamshire, UK.
Posts: 3,594
Default Re: AVO Multimeter survey

Quote:
Originally Posted by Superscope View Post
Refugee,
Thanks for the new Serial, but I have to ask,
What is your Blood Red Tinting Trick?
I put my finger over the flash in order to stop the camera overloading while taking a close up shot. The red is my real blood as the light has gone through my finger. If it scares anyone I could convert the image to mono
The serial number is impressed into the dial before painting by the looks of it so the contrast is poor.
Refugee is offline   Reply With Quote
Reply

Thread Tools



All times are GMT +1. The time now is 6:54 pm.


All information and advice on this forum is subject to the WARNING AND DISCLAIMER located at https://www.vintage-radio.net/rules.html.
Failure to heed this warning may result in death or serious injury to yourself and/or others.


Powered by vBulletin®
Copyright ©2000 - 2018, vBulletin Solutions, Inc.
Copyright ©2002 - 2018, Paul Stenning.