Subject: Re: special to ron & dave<br/>
Date: Sep 13, 2004 @ 15:24<br/>
Author: aletheiak (&quot;aletheiak&quot; &lt;aletheiak@...&gt;)<br/>
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<div id="ygrps-yiv-1755450794">bravissimos maestro<br/>
we are counting on you<br/>
<br/>
& of course your point500 outshoots my point508<br/>
as your finer instruments prove<br/>
because mine were farther out of touch with the true geoid<br/>
<br/>
very nice<br/>
<br/>
& so <br/>
at the standard quadrisignificant conversion rate of point3048<br/>
i now get my foot enhanced by only as much as <br/>
point0135061242<br/>
<br/>
now <br/>
if only 5 of those 9 working digits are authentic & significant<br/>
as i believe<br/>
& if they are also already at the limit of human perception<br/>
as i also believe<br/>
then my previous computations completely hold up for now as <br/>
the limit of what can be known of true bcidwa without an <br/>
intermonumental sight line<br/>
<br/>
but ironically all this hard won precision is idle for now because <br/>
we are still shooting at a centisec target here that is more than a <br/>
foot wide<br/>
<br/>
hopefully tho <br/>
it will actually be useful to an aspiring punctoscopist somehow <br/>
somewhere some day<br/>
<br/>
--- In <a rel="nofollow" target="_blank" href="mailto:BoundaryPoint@yahoogroups.com">BoundaryPoint@yahoogroups.com</a>, &quot;Ron McConnell&quot; <br/>
&lt;rcmcc@e...&gt; wrote:<br/>
<blockquote><span title="qreply"> &gt; <br/>
&gt; &quot;aletheiak&quot; says,<br/>
&gt; &quot;...the length of a minute of latitude at<br/>
&gt; the 49th parallel as 1853meters plus 508mm<br/>
&gt; & borrowing directly ...<br/>
&gt;   &lt;<a rel="nofollow" target="_blank" href="http://home.online.no/~sigurdhu/Grid_1deg.htm">http://home.online.no/~sigurdhu/Grid_1deg.htm</a>&gt;<br/>
&gt; i have it as 1853meters plus 500mm<br/>
&gt; so which is truer <br/>
&gt; & how many digits are reliable in any case?&quot;<br/>
&gt; <br/>
&gt; Vincenty & Sodano =  1853.496  m<br/>
&gt; USCG POSAID2      =  1853.5016 m<br/>
&gt; Both round to 1853.50m<br/>
&gt; <br/>
&gt; We just returned home.  I&#39;ll try to study<br/>
&gt; the rest of the message later after<br/>
&gt; taking care of chores.<br/>
&gt; <br/>
&gt; Cheers, <br/>
&gt; <br/>
&gt; Ron McC.<br/>
&gt; w2iol@a...<br/>
&gt; <br/>
&gt; Ronald C. McConnell, PhD<br/>
&gt; <br/>
&gt;  WGS-84: N 40º 46&#39; 57.6&quot;  +/-0.1&quot;<br/>
&gt;          W 74º 41&#39; 22.1&quot;  +/-0.1&quot;<br/>
&gt;          FN20ps.77GU31 +/-<br/>
&gt;          V +5058.3438  H +1504.2531<br/>
&gt; <br/>
&gt;  <a rel="nofollow" target="_blank" href="http://home.earthlink.net/~rcmcc">http://home.earthlink.net/~rcmcc</a> </span></blockquote></div>