1.Product function: Combines the map ruler and compass in one, both measuring the distance and determining the direction of the two functions. The navigation compass adopts highprecision magnetic needle inside to ensure accurate direction display. Highresolution luminous lens can reflect sunlight to send an emergency signal. 2.Multiscales and high accuracy: Orientation running compass a variety of scales to choose from, such as centimetres and inches to meet the measurement habits and needs of different users. Highprecision magnetic needle and scale design ensures the accuracy of measurement results and provides the user with reliable navigation support. 3.Quality material: the inner core of the waterproof military compass is made of highquality material and is filled with damping fluid inside, which makes the rotation smoother. The shell adopts a waterproof design that effectively prevents water from entering and can be used normally even in bad weather. The card ruler part of the selection of wearresistant materials, the scale is not easy to carry to ensure longterm use of precision. 4.Easy to carry: the multifunctional hand compass design is compact and small, easy to put in a backpack or bag, does not take up space. Equipped with a portable lanyard, convenient for users to access at any time, not easy to lose. Note: Keep away from magnetic fields and metal when using.