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From: Dave Plowman (News) on 15 Nov 2007 06:08
In article <YRU_i.7541$Ew3.3438(a)newsfe7-gui.ntli.net>,
Arfa Daily <arfa.daily(a)ntlworld.com> wrote:
> > I'd guess they must otherwise they wouldn't be listed. Perhaps only
> > for display purposes, though. I can't remember when last I used mine.
> > I have a smaller analogue unit I use on old stuff where the readings
> > call for a 10,000 ohms per volt one.
> >

> Dave AAAAARRRGGGGHHH !!! How can you own an AVO 8, and not use it in
> preference to a 'little' one !!! Mine gets used every single day of my
> working life ! I've had it since it was issued to me as an apprentice 35
> years ago, and nothing would persuade me to part with it for 'general'
> fault finding measurements. My high quality digital only comes out when
> I need to know exactly what a voltage or resistance is. Without your
> AVO out on the bench, where do you put your screws ...?

Heh heh. I have a mains digital LED bench meter firmly screwed to a shelf
above the workbench. Comes on with the bench supply. Does things like
autorange and peak hold which I find indispensable these days. Hardly ever
need an analogue one - and I'd not like to drop the AVO. ;-)

> Finest analogue meter ever made, barring none, but I do think that 800
> quid is a bit OTT. You'd have to be really serious to part with that
> sort of money, even for an '8. They are still readily available at
> radio rallies for less than �70 most times.

Yup. Mine cost a couple of week's wages in the '60s - complete with
leather case.

--
*Never test the depth of the water with both feet.*

Dave Plowman dave(a)davenoise.co.uk London SW
To e-mail, change noise into sound.
From: N Cook on 15 Nov 2007 07:52
If anyone finds this thread in the archives.
This place
http://www.inmar.co.uk/about.htm
when it was called Test Instrument Services used to rebuild/rewind the meter
movements for the likes of Avos , but mainly keeping old but still vital
bits of ship's instrumentation going.
Don't know if they still do so.

Anyone know of a tutorial or hints/tips for dismantling/rewinding/resetting
the hairspring on such meters ?
Don't have an immediate requirement fo rthe knowledge but its something I've
always steered away from attempting.

--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list on
http://home.graffiti.net/diverse:graffiti.net/




From: N Cook on 15 Nov 2007 13:48
Nice to see an Avo valve characteristic meter (mk 3 or earlier) in with the
resusitated Colosus at Bletchley Park/ Station X, on the news today.

--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list on
http://home.graffiti.net/diverse:graffiti.net/





From: Baron on 15 Nov 2007 17:12
Arfa Daily wrote:

>
> "Dave Plowman (News)" <dave(a)davenoise.co.uk> wrote in message
> news:4f421189bedave(a)davenoise.co.uk...
>> In article <fhh053$o4m$1(a)inews.gazeta.pl>,
>> N Cook <diverse8(a)gazeta.pl> wrote:
>>> Dave Plowman (News) <dave(a)davenoise.co.uk> wrote in message
>>> news:4f41db8a14dave(a)davenoise.co.uk...
>>> > In article <WxI_i.109738$PQ6.22347(a)newsfet01.ams>,
>>> > Jim Hawkins <jimhawkins(a)manx.net> wrote:
>>> > > I have an Avometer Model 8 in excellent condition except for
>>> > > some corrosion in the battery compartment. Before I have a go at
>>> > > stripping the compartment out and either cleaning or replacing
>>> > > the
>>> > > corroded bits, has anyone any tips on doing this ? Any sources
>>> > > of replacement battery compartments ?
>>> >
>>> > They are still available new (at a price) so I'd guess AVO will
>>> > supply spares.
>>
>>> Does anyone pay 800 GBP plus VAT for a new Avo 8 ?
>>
>> I'd guess they must otherwise they wouldn't be listed. Perhaps only
>> for display purposes, though. I can't remember when last I used mine.
>> I have a smaller analogue unit I use on old stuff where the readings
>> call for a 10,000 ohms per volt one.
>>
>
> Dave AAAAARRRGGGGHHH !!! How can you own an AVO 8, and not use it in
> preference to a 'little' one !!! Mine gets used every single day of my
> working life ! I've had it since it was issued to me as an apprentice
> 35 years ago, and nothing would persuade me to part with it for
> 'general' fault finding measurements. My high quality digital only
> comes out when I need to know exactly what a voltage or resistance is.
> Without your AVO out on the bench, where do you put your screws ...?
>
> Finest analogue meter ever made, barring none, but I do think that 800
> quid is a bit OTT. You'd have to be really serious to part with that
> sort of money, even for an '8. They are still readily available at
> radio rallies for less than �70 most times.
>
> Arfa

I agree ! My first Avo was a model 7 more than 40 years ago. Like Arfa
my Model 8 Mk2 is in daily use. I once watched a bloke cry after
accidently pushing his off the seat of a truck he was working on!

--
Best Regards:
Baron.
From: Jim Hawkins on 4 Dec 2007 08:38

"Baron" <baron.nospam(a)linuxmainiac.nospam.net> wrote in message
news:fhfn9c$rmp$1(a)aioe.org...
> Jim Hawkins wrote:
>
>> I have an Avometer Model 8 in excellent condition except for some
>> corrosion in the battery compartment.
>> Before I have a go at stripping the compartment out and either
>> cleaning or
>> replacing the corroded bits, has anyone any tips on doing this ? Any
>> sources of replacement battery compartments ?
>>
>> Jim Hawkins
>
> AVO in Dover still carry spares as do Farnell in Leeds.
>
> --
> Best Regards:
> Baron.

Thanks, Baron and N. Cook
I couldn't find any replacement battery contacts, so
stripped the battery comparment, got the contacts cleaned
and gold-plated.
Re-assembly is tricky - helps if you're a twelve-fingered Bessarabian dwarf.
Two types of 15v battery that fit the AVO are still available.
So my elderly Avo8 is now fully functional on all ranges, and checks out
well against my Fluke 189.

Jim Hawkins




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