Square (Douglas) Protractor

High-quality Lexan® construction ensures this plotter won't melt, warp, or break under extreme temperatures. Covering a small 5-1/8" area this plotter is a go-to for accurate flight planning. Using a 1:500,000 scale it includes 5nm and 10nm radius rings for simple measurement. It also has a 2nm grid that makes alignment with parallels easy!