Transparentcoordinate scale is wear long servicelife. Wide application: suitable for land, sea navigation or other adventure activities. Easy to read: Topographic map scales thecompass reads degrees andmiles. 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. Compatibility: Scale map are suitable for MGRS, for USNG, or other metrybased coordinate Size:Approx. 127x127mm/5x5in Thickness:1.2mm Colour:As Shown Material:Plastic Package Contents: 2set x military protractor Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.