When orienting a map with a compass, you should pay attention to which diagram?

When orienting a map with a compass, you should pay attention to which diagram?

• A. Declination diagram
• B. Scale diagram
• C. Legend
• D. Grid lines

Answer: (A)

When orienting a map with a compass, the key is magnetic declination—the angle between true north (on the map) and magnetic north (indicated by the compass). The declination diagram on the map shows this difference for your area, often noting whether variation is east or west and how it changes over time. This information lets you convert between map bearings and compass bearings so your directions align with the terrain in the field. Other diagrams like the scale diagram, legend, or grid lines provide distance, symbols, or coordinates, but they don’t tell you how to compensate for magnetic variation, which is why the declination diagram is the essential reference.

When orienting a map with a compass, the key is magnetic declination—the angle between true north (on the map) and magnetic north (indicated by the compass). The declination diagram on the map shows this difference for your area, often noting whether variation is east or west and how it changes over time. This information lets you convert between map bearings and compass bearings so your directions align with the terrain in the field. Other diagrams like the scale diagram, legend, or grid lines provide distance, symbols, or coordinates, but they don’t tell you how to compensate for magnetic variation, which is why the declination diagram is the essential reference.