A Sighting Optic --- allows you to read datas directly, and the Vertical Lubber line of the sighting optic improves its accuracy and decreases its errors.
Fluorescent Light Design --- Luminous magnet arrow and compass card allows you to read data in dark environment after absorbing enough sunshine.
Compass and Clinometer Function --- This is also a clinometer, enable to measure height and slopes.
Multifunctions --- Foldable metal lid, Floating compass dial with 360° scale, Adjustable prism lens, Waterproof Shakeproof.
High Strength Engineering Metal --- capable of working under extreme weather condition, suitable for Camping, Climbing, Boating, Exploring, Hunting, Hiking, Geology and Other Outdoor Activities.