Brunton Outdoor Inc. 1795 Dogwood Street, Louisville, CO 80027 | www.brunton.com | 800-443-4871
10232020 v.1.1
7. MEASURING TREND AND PLUNGE
Identify the linear feature that you would like to measure the trend
and plunge of (the RED tape for enhanced visibility in Figure 7a).
Place an object such as your map board (the GREEN sheet labeled A in
Figure 7b) directly on the linear feature (RED tape labeled B in Figure
7b) and then place the side edge of the GEO LITE flush against the
board. Keeping the map board on the line, rotate the board until the
bubble level is centered (labeled C in Figure 7b) and the board is dead
vertical. The needle now reads the trend, or plunge direction.
Figure 7a
Figure 7b
A
C
B
