The Suunto A-10 NH Compass is a robust, easy to use compact compass for general recreational use. Great for the beginner, learning the basic techniquest of map & compass navigation.A general purpose compass that is great for beginners. Ergonomically shaped baseplate. Fixed declination correction scale measures amounts between magnetic and true north. Inch, centimeter and 1:24,000 scales on baseplate. Liquid filled for steady needle. Snap-lock lanyard allows the user toe easily detach the compass from the lanyard. Sapphire jeweled bearing. Tungsten steel needle. Water resistant printing. Dial with 2 degree increments. Temperature range from -40F to 140F. Self-cleaning capsule bearing. Size: 2.2 in. x 3.5 in. Weight: 0.8 oz.