U.S. Geological Survey Data Series 652
Link to the sb_b68_b Printable Profile.
Link to the sb_b68_b Line Navigation Map.
NOTE: Fully functional with Internet Explorer 8 for Windows or Firefox 3.6 for all platforms Serious intermittent navigation errors are present. Use location information with caution
1 Pixel = 1 Shot
Vertical Red Annotation Every 500 Shots
Horizontal Red Annotation Every 20 Meters
GPS Offset is dX=1.5m dY=-20m Applied