Baseplate orienteering compasses from the Suunto brand are widely used and an excellent resource for any expert geologist or field worker.
with so many functions, the Suunto MC-2 mirror compass stands out above other models in its class. The gear-operated declination adjustment system, which is a standard feature, makes this compass useful in situations where there are significant magnetic variations.
The pendulum clinometer, which is another common characteristic, is useful for measuring height and various slopes as well as the slope of the ground. There are two-degree interval azimuth (0-360) graduations available for the illuminated bezel. Color lines and light points can be arranged cleverly to eliminate parallax error.