DETUCK(TM Liquid Field Compass Professional Map Compass Navigation Compass (C-11) 1,Compass Lightweight and Durable Transparent Scratch-Resistant Acrylic material. 2,High Directional Sensitivity Compass. Made by Vacuum Oil Type technology, Pointers can fast Point to the orientation. 3,Multifunction Compass. Orientation discrimination, location, distance, slope measurement , azimuth measurement, pitch angle measurement, mapping scale, plotting scale, measuring scale, drawing, magnifying glass and so on. 4,DETUCK provide a series of different specifications of map compass to better meet customers needs. 5,Compass Suit For camping,hiking,hunting,mountaineering,climbing,wilderness exploration,field trip,etc.