We sell many of these to scouts in the store who are learning orienteering. An ideal beginner compass, it offers easy reading, is durable and inexpensive. Designed with an optic green, scratch resistant baseplate and a patented, tool-free declination adjustment. Other features include 2° Graduation, declination scale, 0-35° inclination scale, orienteering lines, inch and mm scales, tungsten steel needle and friction-free sapphire bearing. Perfect for backpacking or just to throw in your glove compartment. Includes a lanyard and easy instructions. Use the enclosed serialized card to go online to signup for a FREE 2 month subscription to National Geographic ALLTRAILS.COM site, which allows you to download unlimited digital topo maps and access to other useful information from their online community. Measures 3-1/2" x 2-3/8" x 3/8".