[Test-Equipment] Triplett 310 leads was Re: Simpson 269 Series III

[Barry]

I looked some more into the Model 10 today.  The other day when I compared the range resistor's values to the schematic, their values didn't agree and, mostly, were running a bit high; however, I realized that those are wire wound types and, so, they should not have changed much if at all.

I opened the Model 10 again today and now I see that the range resistor's values are labeled and they check extremely close to their labeled values; however, those values do not agree with the schematic in the booklet I have that came with both units.

This brings me to wonder if I have a different version of the Model 10 and, even more so, which version of the 310 I have.  I understand there are a few(?) different versions but I cannot see anything in the 310 or the 10 that indicates which version those are.  That leads me to think that they both are the original versions but I don't have anything to back that up.

Is there a way to tell which version I have of both/either unit and, mostly, were there different versions of the Model 10 that might account for the difference in the resistors that are in mine?

Thanks,
Barry - N4BUQ

----- Original Message -----
> From: "Barry" <n4buq at knology.net>
> To: "Discussion of Electronic Test Equipment" <test-equipment at mailman.qth.net>
> Sent: Sunday, March 28, 2021 12:04:03 PM
> Subject: Re: [Test-Equipment] Triplett 310 leads was Re: Simpson 269 Series III
> 
> Hi Ed,
> 
> I'd seen the Probe Master site but had forgotten that Triplett still sells
> the 310 so those leads are also available.  Sometimes I let the fact that I
> got something inexpensively influence my decisions to buy things for it that
> are more expensive than I'd like to pay and I need to look at the overall
> price instead.  I mostly would like to replace the short red lead from the
> AC clamp as that one is not in good shape and I can use one of the
> mini-banana to some other fitting for that and can worry about the leads
> separately.
> 
> Thanks again for the pointers!
> 
> Thanks,
> Barry - N4BUQ
> 
> ----- Original Message -----
> > From: k4pf at juno.com
> > To: test-equipment at mailman.qth.net
> > Cc: test-equipment at mailman.qth.net
> > Sent: Saturday, March 27, 2021 9:59:48 PM
> > Subject: [Test-Equipment] Triplett 310 leads was Re: Simpson 269 Series III
> > 
> > 
> > 
> > > Barry <n4buq at knology.net> wrote
> > 
> > <snip>
> > > I also scored a Triplett 310 with the Model 10 AC clamp and Model 101
> > > adapter/multiplier all in the tall leather case.  I thought I had both
> > > leads but somehow one of those either got away from me or I imagined
> > > both.
> > > In any case, the one I have is in pretty poor condition and I'm looking
> > > for new leads.  Anyone know if what is now known as mini-banana plugs are
> > > correct for this meter?  If so, I should be able to fashion some new
> > > leads
> > > with some replacements.  BTW, the 310 appears to work in all modes I
> > > tested including the AC clamp. <snip>
> > 
> > Hi, Barry
> > 
> > The leads you want for the Triplett 310 series
> > is their part number 79-153, which has the needle point.
> > Mine have an "M" impressed in the mini banana plug, which indicates
> > the manufacturer.
> > 
> > https://www.triplett.com/search?type=product&q=79-153*
> > 
> > You should be able to find a cheaper source.  I bought some leads about 20
> > years ago, when I was acquiring Triplett 310's,
> > and I recall the price for a set was closer to $10 then.
> > I guess $25 now is like $10 then.  I'm getting old.
> > 
> > Here's a place that seems to sell the equivalent mini-banana leads, but
> > without the alligator clips:
> > https://probemaster.com/2mm-mini-banana-test-leads/
> > 
> > 73,
> > Ed
> > 
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