The normal positional accuracy of topographic maps is often considered to
be about 0.5 mm (1/50 inch), and so a 1:25,000 scale map can show
positions only to within about 12.5 m. So, a 3 m long line would appear as
a point. A 3 m wide stream if plotted to true scale on a 1:25,000 scale
map would appear only 0.12 mm wide, too narrow to draw and still see it.
Cartographers exaggerate the widths of linear features in order that they
can be seen, or delete them completely.
I'll certainly have to go to this place next time I'm in the neighborhood!
David
On Wed, 9 Aug 2000, michael donner wrote:
> multi awesome once again master
>
> > Dear Michael, thanks for your inquiry about the Tp BeDeLu (I'm about
> >to learn the abbrevs...- you see...):
>
> awesome how you have increased them
>
>
> >
> >In my humble opinion this point - or pair of joint zone tp-twins should
> >most certainly be considered as one point and one point only !
>
> imho you have nothing to be humble about tho
>
>
> >
> >I just consulted my Belgian topo-map 1:25.000 on this matter: - and I
> >remember the topo-reality from my two visits to this tp: the river Our
> >forms the border between Germany and Luxemburg and Germany and Belgium .
> >A small creek: Ribbach forms the border between Luxemburg and Belgium.
> >Where Ribbach empties into the Our, that's where we got our tripoint.
> >This tp was - some years ago - marked by a sign on Lux-territory telling
> >"Les trois frontières" - in the meantime another "Euro-monument" was
> >erected at this place, I was told... - we'll find out next year on our
> >expedition...! The Belgian-German boundary-line is marked on either side
> >of the Our-river by boundary markers (stones) starting with number 1 -
> >and these stones are placed on both sides of the river alternately..!
> >This could very well be symbolic for the joint administration of the
> >river !
>
> very very well
>
> in fact we may even have stumbled on a pattern or standard of river
> condominiums here
> so it is very poignant
>
>
> >
> >On my map no boundary markers are shown on the Lux-Ger portion of the
> >Our... The Our is in fact no river, maybe a creek would be a more
> >appropiate name for that body of water - about 3meters wide...
>
> this short line could & i agree should be counted & celebrated as a single
> point
>
> it is certainly a single spot or precinct to visit or enshrine
>
> the sober truth may even be that the 3m transit of our creek at ribbach
> mouth is our first tri trinity point or joint or line
>
>
> it could become especially venerated at the midpoint or thread of the stream
> as well as at both banks
> as well as etc etc
> a unity a duality &or a trinity
> nudity optional
>
>
> >
> >BTW: a couple of days ago I received Jack Parsell's book on Tri- State
> >Corners - wonderful work...! This book also reveals photo- graphs of some
> >of this site's VIP's - including yourself...! All the best Peter
>
> awesome book
>
> i am glad you said that
>
> it is easy to see such an obvious idea after it has been actualized
>
> we have the artifact
>
> but try getting there from scratch
>
> salutes
> m
>
>
>
>
>
>
>
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