This orienteering ruler is designed with compass,you can use it to navigate in the woods.
It is a good tool for using at camping,hiking,scouting and more,estimate the real distance between two point on the map.
Transparent design makes you can still easily see the map,when you place the ruler on the map.
It comes with a rope,you can use the rope to tie the ruler on your backpack,wrist and more,to prevent it from dropping or being lost.
Compact and lightweight,no need much space for storage,it uses strong and tough acrylic to make,not easy to be damaged.