The direction toward which a magnetic needle of a compass points.

Bearing by magnetic north rather than true north.

A key accompanying a map which shows information needed to interpret that map. Each type of map has information represented in a different way relating to its subject matter. The legend can explain map scales, symbols and color.

A feature in the landscape which can be readily recognized; anythign from a prominent tree or rock, to a church or a lake.

A graphic scale is a line marked off on a map which compares map distances to the ground distance in "different" units of measurements.

A unit of angular measurement equal to one-360th part of the circumference of a circle. The entire globe contains 360 degrees, each degree contains 60 minutes, and each minute contains 60 seconds.

The difference in degrees between true north and magnetic north.

A line on a map or chart indicating elevation in feet, and connects all points of the same height above sea level.

An instrument used for showing direction, consisting of a magnetic needle swinging freely on a pivot and pointing to magnetic north.

An imaginary line on the ground running east-west (horizontal) measured with special accuracy to provide a base for surveying.