11/06/2026
Before computers, before ipads we used a real manual flight computer. Manual, mechanical slide-rule flight computer used by pilots for navigation, flight planning, and flight training last century :p
Often referred to affectionately by pilots as a "whiz wheel," it requires no electricity or batteries. A circular slide rule used to calculate time, speed, distance, fuel burn, unit conversions, true airspeed, and density altitude. It features a sliding grid card to graphically calculate wind correction angles (WCA) and groundspeed based on crosswinds.