Transparentcoordinate scale is wear long servicelife. Wide application: suitable for land, sea navigation or other adventure activities. Scale: Coordinate scale protractors are widely used by andnavigator to mark map being measured, for 1:25,000, 1:50,000, 1:100,000, 1:250,000 map. Easy to read: Topographic map scales thecompass reads degrees andmiles. Compatibility: Scale map are suitable for MGRS, for USNG, or other metrybased coordinate, Weight: 0.07385485777 Pounds, Manufacturer: Jaywool