Drawing upon our classic 15TDCL, the all new TruArc15 is upgraded with a full coverage mirror cover for extra protection, and the TruArc Global Needle system with Ever-North rare earth magnets. The luminous, high-visibility cling lends low-light and night time performance, and the triple clinometers system gives fast and accurate reference information for avalanche safety or earth-science field work. Overall Dimensions 4 x 2.5 x 0.6 Weight 3.2 OZ Map Magnifier Sighting Mirror Bubble Level Clinometer Magnified Readout