Longknife Practice Test

A declination diagram is a small compass-like graphic that shows the angle between true north and magnetic north (and sometimes grid north). It’s a navigational aid, so it’s placed where it won’t clutter the map’s details. The typical location is the lower margin in the center of the map, which keeps the information accessible but separate from the main features. The upper left corner, the legend, and the scale bar serve different functions, so they aren’t the usual home for the declination diagram. This placement lets you quickly correct compass readings when reading the map.