Grid North vs True North? Calculating difference?
  
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Grid North vs True North? Calculating difference?
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epare



Joined: 08 Jun 2006
Posts: 1
Posted: Thu Jun 08, 2006 7:23 am    Post subject: Difference between Grid North and True North? Reply with quote
At http://nmviewogc.cr.usgs.gov/viewer.htm , once you have zoomed in closely to a geographic area that you want to view and have then clicked on the check box that then appears for the 7.5 Minute Index under Topographic Maps, how do you determine the convergence (difference between grid north and true north)?
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