Features:This model uses a true sighting optic that allows you a direct read of the internal compass card housed in the fluid filled capsuleThe vertical lubber line of the sighting optic lets you take full advantage of the 1 degree resolution used on the compass cardThe clinometer allows the measuring of differences in height and slopesGreat for hunting， hiking， Geology and other outdoor activitiesFoldable metal lidSighting window with sighting lineFloating compass dial with 360? scaleLuminous magnet arrowAdjustable prism lensMaterial: High-strength Engineering Metals， Army Green PaintThis compass is a precision instrument， the deviation of 1 degree or lessMinimum score value: 1 ��Working temperature: - 20 �� - + 50 ��Fluorescent dribbling fluorescent displayPackage Included:1 x Metal Sighting Compass1 x Carry Bag1 x Manual