6-Inch Waterproof Circular E6B-R Flight Computer

This 6-inch circular flight computer is constructed from durable waterproof plastic with integrated precision scales and metal components for enhanced longevity. It weighs approximately 120 g and features a compact, robust design with no exposed sliding parts — significantly reducing risk of damage during frequent handling or field use. The printed scales and markings are fully laminated between two layers of plastic, ensuring legibility remains intact even after years of intensive aviation training use. The device replicates all standard E6B-R slide chart functions, including wind side calculations for true wind velocity/direction, true heading, ground speed, and wind correction angle. On the calculator side, it supports multiplication, division, unit conversions, and scale-based computations for time–speed–distance relationships, fuel consumption estimates, pressure altitude, density altitude, airspeed corrections, temperature–pressure pattern analysis, and basic arithmetic. Designed specifically for UK and EASA-aligned pilot training, it supports both VFR and IFR flight planning scenarios — ideal for PPL, CPL, ATPL ground school, and simulator sessions. Its intuitive circular layout enables rapid mental-model alignment and reduces calculation errors common with linear slide rules during high-cognitive-load tasks.