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From: JB on 16 Sep 2009 23:59
Still using a Bird 80AS1 20 watt dummy load. sn 18xx. I have no idea how
old it is. Copper box with Black crackle finish and old looking deacal on
top. It is listed on the Bird website as discontinued but a pdf scan of a
two page typewritten sheet is available. It just "looks" older than any of
my 60's Bird loads. I have used it for testing at up to 500 watts for brief
tune-ups, never more than warm to the touch, and is most useful because of
its size for portable operation.

From: N_Cook on 17 Sep 2009 05:15
Metabastler <Metabastler(a)tee-offline.de> wrote in message
news:h8rfqh$s0l$02$1(a)news.t-online.com...
> We still use some General Radio Stuff at work. Not GenRad or followup.
> And I have a 20m (steel) tape ruler still in use from about 1930, does
> this count too? :-)
>
> Greetings from Germany
> Metabastler


I could not find a www pic of it, so here is one

I translated the centre terminal legend of
Kriechstrom-schutz to mean earth leakage protection, it is connected to
battery negative.
http://home.graffiti.net/diverse:graffiti.net/norma.jpg
foot/inch ruler included
shiny black finish reflecting the camera
Normal 90 degree centre pivot analogue meter so the only reason for the odd
shaped bezel must be for styling

As far as ancient hand tools are concerned, this set of parallel jaw pliers,
marked date of 1918 ,Bernards of Conneticut, number 9 on here
http://www.diversed.fsnet.co.uk/tools_m.jpg
i use about every day


ETA Tool Co, Leicester, coil winding machine approx 1920s, later than 1912
anyway
http://home.graffiti.net/syxygy:graffiti.net/eta1.jpg
I resucitated from totally seized up with rust from being in a leaky garden
shed for decades, used once a month or so.

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



From: Mark Zacharias on 17 Sep 2009 06:46
"N_Cook" <diverse(a)tcp.co.uk> wrote in message
news:h8qu9s$buu$1(a)news.eternal-september.org...
>I decided to break into my 1000V DC, 10 Gigohm insulation tester, today. No
> particular reason , just curious, as still in perfect working order.
> Had to break a seal to get inside, never needed repair by me or previous
> owners, just my adapting to 9V nicad use rather than pair of unobtainable
> 4.5V batteries.
> Made in Austria , Norma Isolationmesser 667 001
> Date inside is 15 December 1965, i thought it would be 1970s
> Just disintegrated foam inside, compenentry like Siemens AD130, AC153 and
> OC75 all fine. Whenever I check calibration with a 1G glass cased resistor
> it is the same cal setting, no switch problems or anything else.
>
>
> --
> Diverse Devices, Southampton, England
> electronic hints and repair briefs , schematics/manuals list on
> http://home.graffiti.net/diverse:graffiti.net/
>
>
>


Many if not most of us here have old multimeters - Simpsons and the like.

I have an RCA WV-38A multimeter with documentation from 1963, a Simpson 270
Series 2 from the same year, and an AVO from about 1968 IIRC, it's a model 9
Mark IV, (like an 8 Mark 3 but the international model). They all work
perfectly. The 270 and the AVO are pretty much accurate to within the width
of the meter needle.

I use these things on a nearly daily basis.

And of course there's lots and lots of old scopes out there, many of us use
them for less critical apps (monitoring for example) where high frequency
performance isn't critical.


Mark Z.

From: Tim Schwartz on 17 Sep 2009 07:24
N_Cook wrote:
> I decided to break into my 1000V DC, 10 Gigohm insulation tester, today. No
> particular reason , just curious, as still in perfect working order.
> Had to break a seal to get inside, never needed repair by me or previous
> owners, just my adapting to 9V nicad use rather than pair of unobtainable
> 4.5V batteries.
> Made in Austria , Norma Isolationmesser 667 001
> Date inside is 15 December 1965, i thought it would be 1970s
> Just disintegrated foam inside, compenentry like Siemens AD130, AC153 and
> OC75 all fine. Whenever I check calibration with a 1G glass cased resistor
> it is the same cal setting, no switch problems or anything else.
>
>
> --
> Diverse Devices, Southampton, England
> electronic hints and repair briefs , schematics/manuals list on
> http://home.graffiti.net/diverse:graffiti.net/
>
>
>
Well,

I still use my ears and eyes, the most useful metering devices I've
got, and they are from 1961, though I'm sure that there are some in use
that are older. Some people even still use biological computer and
storage devices (brains). <G>

I've also got a late 1950's or early 1960's vintage HP 400D AC-VTVM,
but I only use it a few times a year.

Regards,
Tim Schwartz
Bristol Electronics
From: Geoffrey S. Mendelson on 17 Sep 2009 07:34
Tim Schwartz wrote:
> that are older. Some people even still use biological computer and
> storage devices (brains). <G>

The beauty of them is that as they fade out, you don't notice. :-(

I say to people "I have a photographic memory but I ran out of film about
10 years ago".

Geoff.

--
Geoffrey S. Mendelson, Jerusalem, Israel gsm(a)mendelson.com N3OWJ/4X1GM
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