The ASA-E6B Metal Flight Computer is the industry's leading slide-rule-style flight computer, built from durable aluminum for long-lasting use. Designed for precise flight planning and in-flight calculations, this essential tool allows pilots to quickly determine time, speed, distance, altitude, true airspeed, and density altitude. The wind component grid and crosswind correction chart provide added functionality, while the included vinyl case and instruction booklet make it easy to use and store.