A declination diagram shows the angular relationship between which norths?

• A. Magnetic north and true north
• B. Grid north only
• C. Magnetic north, grid north, and true north
• D. True north only

Answer: (C)

A declination diagram shows how all three north references relate to each other: true north (geographic north), grid north (the map’s north based on the grid), and magnetic north (the direction a compass points). It marks the angles between them—magnetic north to true north and grid north to true north—so you can convert bearings between compass readings, map grid bearings, and true bearings. That’s why this diagram is described as showing the angular relationships among magnetic north, grid north, and true north. If magnetic north lies offset from true north, and grid north lies offset from true north, the diagram displays those angles so you can navigate accurately by any reference system.