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<font size=3>Jay:<br><br>
Accurate enough to size water pumping systems. I imagine 3 meters
total, or +/- 1.5 meters. I don't need absolute measurements, just
relative between two points.<br><br>
William<br><br>
<br><br>
<br>
At 01:42 PM 1/27/2009, you wrote:<br>
<blockquote type=cite class=cite cite>Hi William,<br><br>
What sort of accuracy are you needing?<br><br>
jay<br><br>
peltz power<br><br>
<br><br>
<br><br>
On Jan 27, 2009, at 1:34 PM, William Miller wrote:<br><br>
<blockquote type=cite class=cite cite>Does anyone have a foolproof tool
to measure elevation? I have <br>
researched GPS units recently. They are notoriously inaccurate
for <br>
elevation:<br><br>
<a href="http://wiki.motionbased.com/mb/GPS_Unit_Elevation" eudora="autourl">http://wiki.motionbased.com/mb/GPS_Unit_Elevation</a><br><br>
Here are few more links with GPS fundamentals:<br><br>
<a href="http://www.adventurenetwork.com/cgi-bin/adventurenetwork/GPS_101.html" eudora="autourl">http://www.adventurenetwork.com/cgi-bin/adventurenetwork/GPS_101.html</a><br>
<a href="http://www.gpsreview.net/electronic-compass/" eudora="autourl">http://www.gpsreview.net/electronic-compass/</a><br><br>
I have a Suunto Observer watch with an altimeter. I think I can
get <br>
relatively accurate measurements of DIFFERENCE in elevation if I
<br>
measure the two elevations in quick succession. I will be trying
it.<br><br>
<br><br>
William<br><br>
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