traverse computations
chapter fourteen
General
Comparison between Azimuths and Bearings
Azimuths are measured clockwise from North and vary from 0 to 360°. They require only a numerical value (35°, 145°, 215°, etc.). Azimuths may be referenced to true North, to magnetic North, to an azimuth taken from plans, or from an assumed direction. In addition, azimuths may be forward or backward.
Bearings are measured either clockwise or counterclockwise from North and South. They vary from 0 to 90° and require two letters and a numerical value ( N 60° E, S 30° W, etc.). Bearings may be refer-enced to true North, magnetic North, to an azimuth taken from plans, or from an assumed direction. Bearings may also be forward or backward.
Determining the Quadrant
By observation of the value, the field engineer should be able to instantly visualize where the bearing or azimuth is located. Whether it is in the Northeast quadrant, Southeast, Southwest, or Northwest.
Azimuths
0-360°
Clockwise from North.