Garmin Astro 320 Astro and DC 30 Owner's Manual - Page 32

GPS Applications Using the Course Pointer or the Bearing Pointer The bearing pointer indicates the direction to your destination, and the course pointer indicates your relationship to a course line leading to the destination. The bearing pointer points to the destination, regardless of the direction you are moving. If the bearing pointer is pointing in your direction of travel, you are traveling directly toward your destination. If the bearing pointer points any other direction, turn toward that direction until the bearing pointer is pointing ahead. Direction you are currently traveling Bearing to destination Bearing Pointer The course pointer provides an indication of drift (right or left) according to the scale shown at the edge of the compass ring. The scale refers to the distance between dots on the course deviation indicator. The course line to your destination is based on your original starting point. Course line to destination Scale Bearing to destination Course deviation indicator Course Pointer Move back to the "course line to destination" to compensate for deviation and to get back on course. This is most useful if you are navigating on water or where there are no major obstacles in your path. It also helps you avoid hazards to either side of the course, such as shoals or submerged rocks. 26 Astro Dog Tracking System Owner's Manual