For use with UTM, MGRS, USNG or other metric based coordinate systems.
For use on maps with scales of: 1:10000 1:15000 1:24000 1:25000 1:30000 1:100000 1:150000 1:250000 1:300000 1:1000000
Five corner rulers on a single card covering the most common map scales used in adventure races. Each corner ruler allows you to plot a UTM coordinate within a 1km map grid with 10m precision. Each corner has a small hole to allow for placing a mark on the map.