High Strength Engineering MetalThis compass is made of high strength engineering metal, which is sturdy and durable. Multi-function and High Accuracy: A built-in bubble level can improve its accuracy and reduce its errors. It is also a clinometer, allowing you to measure height and slopes by giving accurate measurements for directions. Conversion table for angle, slope and distance on the back plate; ruler units on the sides measuring in inches and centimeters. The Lubber vertical line of the sighting optics improves its accuracy and decreases its errors. Fluorescent DesignThe luminous magnetic arrow and compass card allow you to read the data in a dark environment after absorbing enough sunlight. The dial will light up in the dark to read the data. Waterproof and Shockproof DesignIP 54 waterproof rating and solid metal construction so that it works well in extreme weather conditions. Perfect for hiking, navigation, camping, marine, boating, adventures, travel, hunting, geology and other outdoor activities. Color: Army Green Weight: 330g Accuracy: plus or minus 1 Size: 95*66*28mm Functions: compass, scale, level, inclinometer, rangefinder Product use: basic positioning, lateral slope meter, azimuth angle measurement, deviation angle, target object length and width measurement. Number of pieces delivered: 1 piece becomeveryrich