The Silva EXPEDITION compass is technologically advanced and designed for demanding navigators - experts. Ergonomic DryFlex™ swivel wheel for increased comfort. Built-in magnetic declination adjustment including permanent local adjustment. It contains map scales of 1:50,000, 1:40,000, 1:25,000, GPS scale, inclinometer for vertical angles and luminescence points for navigation in the dark. Equipped with a magnifying glass for more convenient mapping, silicone-rubber feet from the underside of the board for accurate map work and a safety cord with distance scales to measure the length of routes on the map. A map for determining the slope in the map is included.