further crunching of the geocoords of all 4 markers reveals
134 is only about 5 or 6 mm off the alignment of 135 & 136
but
133 is about 5 or 6 cm off the alignment of 135 & 136

so using 133 produces an error 10 times greater than using 134
but evidently not nearly so great as i was imagining

therefore
dont expect a huge difference in the positions where the various
possible sight lines cross the thalweg

they should all converge to a maximum difference of something
less than a meter
if all the maths are right now

or much ado about very little

but youll see

--- In BoundaryPoint@yahoogroups.com, "aletheiak"
<aletheiak@y...> wrote:

> whoops
> it appears from what you say that you may still have your lines
> slightly crossed
>
> so let me review just to make sure you will have them straight

> the moment of truth
>
> for purposes of finding the true atchlin position
> there is nothing at all wrong with the position of marker 135
>
> & the alignment of 135 & 134 is quite good
> & indeed very substantially correct
> & could only be out of line with 136 by an infinitesimally thin

sliver

> at most
>
> so thin that 134 should lead you almost directly to 136 if you
> sight thru 135
>
> but it is the alignment of 135 & 136 that is absolutely correct
> because this is the definitive terminal segment
>
>
> 133 on the other hand is definitely several degrees off the

correct

> terminal alignment
>
> therefore
> the alignment of 133 with any of the others is least good of all
>
> so forget 133 if you can find & use either 134 or 136 with 135
>
>
> also bear in mind
> if you are having difficulty finding 134 & 136
> just follow the line on top of 135 carefully in both directions
>
> straight across the river for 136 of course
> & i believe 54 meters straight upland for 134
>
>
> in a nutshell
> the alignment of 135
> is
> perfect when used with 136
> & very nearly perfect with 134
> but not nearly good enough with 133
>
> --- In BoundaryPoint@yahoogroups.com, "Jesper Nielsen"
> <jesniel@i...> wrote:
> > Yes.
> >
> > The 135's alignment is not good if it was meant to hit 134 or
> 133.
> >
> > Jesper
> > ----- Original Message -----
> > From: aletheia kallos
> > To: BoundaryPoint@yahoogroups.com
> > Sent: Saturday, July 24, 2004 12:42 AM
> > Subject: Re: [BoundaryPoint] ATCHLIN was Map sites
> (ATCHFLN)
> >
> >
> > aha yes
> > i just spotted the people
> > they are so tiny
> >
> > yes
> > relatively speaking
> > by or near the people there
> >
> > but
> > following the line on top of the monument in the
> > foreground
> > i would guess closer to the haystack & cow just to the
> > left of these people
> >
> > & this discrepancy should give you a clue as to
> > roughly how far off the true line marker 133 stands
> >
> > --- Jesper Nielsen <jesniel@i...> wrote:
> > > See attached alignment from 135 to 133 (by the signs
> > > at the hill). Could 134 be there by the people?
> > >
> > > Jesper
> > > ----- Original Message -----
> > > From: aletheiak
> > > To: BoundaryPoint@yahoogroups.com
> > > Sent: Tuesday, July 20, 2004 5:11 PM
> > > Subject: [BoundaryPoint] Re: Re; Map sites
> > > (ATCHFLN)
> > >
> > >
> > > yes yes yes
> > > it is common practice to mark river tripoints this
> > > way
> > >
> > > & the geocoordinate data brought by peter vouch
> > > that precisely
> > > this is the case here
> > > or at least was once the case here
> > >
> > > if you see marker 136 then that is all you will
> > > need to align with
> > > the already found 135
> > >
> > > alternatively if you find 134 that would be
> > > practically enough too
> > > as there is only the slightest difference in
> > > alignment among the 3
> > >
> > > if you find neither of these
> > > then the top line on 135 alone would still be
> > > substantially correct
> > > tho not as good
> > >
> > > & last & least
> > > the data dont support 133 except as a very general
> > > check
> > >
> > > however
> > > whether mats is right or not
> > > all the indications are that you were
> > > substantially on line the first
> > > time
> > >
> > > what we are doing now is just for corrobation &
> > > fine tuning
> > >
> > > & only if you are wanting to improve the existing
> > > class d visit to a
> > > class b
> > > would any of these considerations become very
> > > interesting
> > >
> > > --- In BoundaryPoint@yahoogroups.com, "Jesper
> > > Nielsen"
> > > <jesniel@i...> wrote:
> > > > Would they place a ATFL marker in CH?
> > > >
> > > > Doubt it.
> > > >
> > > > But we can check.
> > > >
> > > > Jesper
> > > > ----- Original Message -----
> > > > From: Ernst Stavro Blofeld
> > > > To: BoundaryPoint@yahoogroups.com
> > > > Sent: Monday, July 19, 2004 9:28 PM
> > > > Subject: Re: [BoundaryPoint] Re: Re; Map sites
> > > (ATCHFLN)
> > > >
> > > >
> > > > --- Jesper Nielsen <jesniel@i...> wrote:
> > > > > What happened to 136?
> > > > >
> > > >
> > > > I think I can see it.
> > > >
> > > > See red circle on attached picture from Peter.
> > > >
> > > > M
> > > >
> > > >
> > > >
> > > > __________________________________
> > > > Do you Yahoo!?
> > > > Yahoo! Mail - Helps protect you from nasty
> > > viruses.
> > > > http://promotions.yahoo.com/new_mail
> > > > Yahoo! Groups Sponsor
> > > > ADVERTISEMENT
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > >
> > ------------------------------------------------------------------------------
> > > > Yahoo! Groups Links
> > > >
> > > > a.. To visit your group on the web, go to:
> > > > http://groups.yahoo.com/group/BoundaryPoint/
> > > >
> > > > b.. To unsubscribe from this group, send an
> > > email to:
> > > > BoundaryPoint-unsubscribe@yahoogroups.com
> > > >
> > > > c.. Your use of Yahoo! Groups is subject to
> > > the Yahoo! Terms
> > > of Service.
> > > >
> > > >
> > > >
> > > >
> > > >
> > >
> > ------------------------------------------------------------------------------
> > >
> > >
> > > Yahoo! Groups Sponsor
> > > ADVERTISEMENT
> > >
> > >
> > >
> > >
> > >
> > >
> > ------------------------------------------------------------------------------
> > > Yahoo! Groups Links
> > >
> > > a.. To visit your group on the web, go to:
> > > http://groups.yahoo.com/group/BoundaryPoint/
> > >
> > > b.. To unsubscribe from this group, send an
> > > email to:
> > > BoundaryPoint-unsubscribe@yahoogroups.com
> > >
> > > c.. Your use of Yahoo! Groups is subject to the
> > > Yahoo! Terms of Service.
> > >
> > >
> >
> > > ATTACHMENT part 2 image/jpeg name=135atli.jpg
> >
> >
> >
> >
> >
> >
> > __________________________________
> > Do you Yahoo!?
> > Vote for the stars of Yahoo!'s next ad campaign!
> > http://advision.webevents.yahoo.com/yahoo/votelifeengine/
> >
> > Yahoo! Groups Sponsor
> > ADVERTISEMENT
> >
> >
> >
> >
> >
> > ------------------------------------------------------------------------------
> > Yahoo! Groups Links
> >
> > a.. To visit your group on the web, go to:
> > http://groups.yahoo.com/group/BoundaryPoint/
> >
> > b.. To unsubscribe from this group, send an email to:
> > BoundaryPoint-unsubscribe@yahoogroups.com
> >
> > c.. Your use of Yahoo! Groups is subject to the Yahoo!

Terms

> of Service.