ASA's instrument plotter includes all current IFR chart scales, and features: * 12 scales to accommodate both NACO and Jeppesen instrument charts * Holding patterns depicted for both standard and nonstandard entries * Compass roses allow quick course and bearing information * Professional layout enabling easy reading during enroute spot checks * Made of durable Lexan resin so plotter won't warp or break in extreme temperatures * Guaranteed Lifetime warranty!