GPS can to tell you where you are on a paper map. Maps are based on True North. Please to make sure your GPS is set to show True North.
1. Enter a Waypoint where two grid lines cross on the map that you think is near you.
2. Check your GPS receiver to find the bearing and the distance to that Waypoint.
3. Figure out what 180 degrees is from the bearing given by the GPS to the Waypoint.For example lets say that the GPS says that Waypoint is 360 degrees (Due North) and 3.5 miles away. Now if you have to travel 360 degrees due North 3.5 miles to reach that Waypoint then where are you in relation to it on the map? You are 3.5 miles 180 degrees due South of the Waypoint. Whenever you want to know where you are on the map pick two grid lines that cross each other on the map. Then enter them into the GPS receiver as a Waypoint. Then check your GPS to find out where the Waypoint is. You are always 180 degrees and the same distance that is given away from that Waypoint.
4. Place your protractor over the bearing where the two gridlines crossed so you can measure the correct reversed 180 degree bearing.
5. Place your ruler on the scale showing miles from the map legend. Figure out the distance on the ruler as compared to the distance given by the GPS
6. Next Place the ruler over the cross-hairs on the protractor and the reversed 180 degree bearing given by the GPS and measure the correct distance with the ruler to pinpoint your actual location on the paper map.
Happy GPS and Bye!
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