Geoscience Reference
In-Depth Information
declination
screwdriver
compass dial with
azimuth scale
outline for alignment
of magnetic needle
sighting
mirror
magnetic needle
2
sight
N-S grid
lines
compass
window
clinometer
scale
marker for azimuth
reading (1)
marker for azimuth
reading (2)
(d)
clinometer needle
declination
screwdriver
clinometer scale
long edge
back of compass window
sight
clinometer
needle
declination adjustment
screw
(e)
(d)-(e) Silva-type compass-clinometer: in this case the Silva Expedition 15TDCL. Views:
(d) top; (e) bottom. There are small variations from model to model, with more features on some models.
Compass-clinometers from other manufacturers have similar features.
Figure 2.3
Continued
