Though incredibly small, this 6" x 3½", brushed aluminum flight computer can perform all the standard aviation performance functions of a larger E6B - and more. A popular item with military aviators, this flight computer features a high-speed compressibility table, high-speed and low-speed wind correction/computation slide, and a standard "whiz wheel" for calculating true airspeed, density altitude, fuel burn, time/speed/distance values, and much more. Can also be used to convert between numerous units of measurement. Comes in a sturdy vinyl case and includes an instruction manual. A durable, affordable aviation staple that no pilot should fly without.