Season's Greetings, List.

Here in Israel the use of WGS 84, Zone 36 Northern Hemisphere, 
is pretty common. Digitized maps (from paper maps) show a high 
level of accuracy compared to ground surveying data in this 
projection. However, GPS (differential) readings are off by a few 
dozen meters.

But... when using a projection called UTM ED 50 the GPS readings 
are far more accurate. 

Can anyone explain to me what's happening? And what is UTM ED 
50 anyway?

TIA to all responders.


Best regards,
Alex Eshed
Digi-Tek Ltd.
12, Homa St., Rishon LeZion, 75655, Israel
Tel: +972-3-961-5840
Fax: +972-3-961-5877
mailto:[EMAIL PROTECTED]
http://www.dgtek.com
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