Navigational Compasses descriptions： We use high-quality raw materials, all materials are very suitable for the product, please rest assured to buy. Compass Pocket Style Survival Military, Geology Outdoor Metal. Features: High Strength Engineering Metal Body, Rugged and Capable of Working Under Extreme Weather Condition. The Bubble Level of This Compass Can Improve Its Accuracy and Decrease Its Errors; Tripod Screw Hole on Base, Ball & Socket Tripod Mount for Increase Accuracy. Special Design of Fluorescent Light Allows You to Read Data in Dark Environment After Absorbing Enough Sunshine. With CM and INCH Ruler on Each Side of the Compass; Reference Table for Angle, Gradient & Distance on Back Plate Suitable for Motoring, Boating, Camping, Mountaineering, Exploring, Hunting and Other Outdoor Activities. Can Be Used for Positioning, Orienting on a Map, Plotting and So On. Specification: Material: Metal Length : 85mm Height : 30mm Width : 63mm Weight: 196g / 6.9oz Package Includes: 1x  Compass Pocket . Products number : SOMONO129669