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.