How To Read A Survey Map With A Compass. A survey’s legend is typically presented on the right hand side of the survey, or along the bottom of the document. Place the compass on the map and connect a and b with the edge of the compass.
Instead, my only way of locating all my survey markers is to follow what i believe is the surveyor’s indication of the bearing and distance from one marker to the next in line. Twist the round bit on the compass (called the compass housing) until the lines inside the compass housing are parallel to the lines on your map and that the big red arrow marked on the compass housing (not the red needle that actually moves, ignore that. Here are our top tips for better map reading so you can start planning your next day out.
Take the true north reading and divide it or subtract it from the magnetic north variation.
Align the red (magnetic) needle with both north in the central circular compass dial. Now, to actually travel at our heading, we need to get the compass needle to line up with and point north. A survey’s legend is typically presented on the right hand side of the survey, or along the bottom of the document. This will be printed on the map.