A classic example of a trusty compass, the 8040G is a mirrored map compass with easy-reading optic green baseplate. Tool-free declination adjustment makes for less confusion, and the built-in thermometer gives you knowledge most compasses do not. 3.8"x2.5"x.9" 1.6 oz. 2� graduations 0-35� inclination scale Declination adjustable Clinometer Inch & mm scales Lanyard Thermometer