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How To Measure Distance On A Chart ( 61 sec Video )   
 

     

  

The dividers are first adjusted to a width of one nautical mile as measured from the chart’s vertical latitude scale next to the charted track.  One nautical mile is equal to one minute of latitude.  The dividers are then walked down the length of the charted track. 


   

 

  
 
   

 

  
  
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