Features: This professional compasses map rulers provide accurate navigation, helping users determine direction and location with guidance. Not only a compasses, but also integrated with magnifier and map rulers function, this product can used for measuring distance, marking locations, and more. When activated in light for first time, the luminously mark of the Compasses navigation can realize night navigation. It have aiming slot and a mirror, which help you view the targets landmark and the magnetic Compasses hiking dials. It is the perfect compasses for directional movement! Great for outdoor activity and exploration, this compasses map rulers assists in navigation, direction determinations, and recording key locations. Specifications: Materials: Acrylic Size: about 10.2x6.5x1.9cm/4.02x2.56x0.75inch Package Includes: 1pc Camping Survival Compasses note: Please allow 1-2cm errors due to manual measurement, make surely that you not mind before order. Due to difference between different monitors, the picture may not reflect the actual color.