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From: N_Cook on 17 Sep 2009 08:59
Tim Schwartz <timhhk(a)verizon.net> wrote in message
news:4AB21C80.90301(a)verizon.net...
> 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


One of the first pieces of test gear I use on first opening a piece of kit
for repair is nasal.


From: Joerg on 19 Sep 2009 19:33
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.
>

Transistors? That's almost new equipment. I'll raise you a Boonton
Megacycle meter. Tubes, cloth-insulated wire and all that.

Then an electric drill from some time in the 20's, still works just fine
and being used.

--
Regards, Joerg

http://www.analogconsultants.com/

"gmail" domain blocked because of excessive spam.
Use another domain or send PM.
From: tnom on 19 Sep 2009 22:15
On Wed, 16 Sep 2009 15:55:05 +0100, "N_Cook" <diverse(a)tcp.co.uk>
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.

How about a 1948 Tektronix 511ad oscilloscope.
All tubes with gold wiring. Here's a link for the ad.


po3bb5l0ajllth8pm3169bv5mcqmmep73v(a)4ax.com

search for Tektronix scope
From: isw on 19 Sep 2009 23:41
In article <h8qu9s$buu$1(a)news.eternal-september.org>,
"N_Cook" <diverse(a)tcp.co.uk> 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.

I have a perfectly functioning Simpson 260; the date written inside the
meter is 1951; it sports hand-wrapped wirewound resistors in the range
switching circuitry. Still nicely calibrated, too, according to my
digital meter.

I found the meter, in pieces, in a trashcan at RCA Broadcast in the late
'60's when I was working there-- somebody had dropped it on the concrete
floor. I took it home and repaired the case and other cracks with epoxy.

Isaac
From: TMI on 20 Sep 2009 04:32
On Sep 19, 11:41 pm, isw <i...(a)witzend.com> wrote:
> In article <h8qu9s$bu...(a)news.eternal-september.org>,
>
>  "N_Cook" <dive...(a)tcp.co.uk> 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.
>
> I have a perfectly functioning Simpson 260; the date written inside the
> meter is 1951; it sports hand-wrapped wirewound resistors in the range
> switching circuitry. Still nicely calibrated, too, according to my
> digital meter.
>
> I found the meter, in pieces, in a trashcan at RCA Broadcast in the late
> '60's when I was working there-- somebody had dropped it on the concrete
> floor. I took it home and repaired the case and other cracks with epoxy.
>
> Isaac

Where were you when I bought 40 BC-100 modules!

Well I have a General Radio Type 1432J Decade Resistor at arms length.
Also a Tektronix 570 tube tracer, Hickok 539c tube tester, Weston 733
tube tester....I'm sure I have something older....than me! I might add
this stuff rocks! They can try and peel it from my cold dead fingers.

TMI
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