Explore the basics of navigation and orienteering with this easy-to-use compass. Product features a sight finder, as well as markings in both the metric and English scales. A detachable lanyard is also included. Map scale is displayed in mm with a ratio of 1:25000. Dimensions: Thickness when folded: .75" (1.9cm) Length when folded: 3” (7.62cm) Length when unfolded: 6” (15.24cm) Width: 2” (5.08cm) Compass diameter: ¬1.9” (4.83cm)