Douglas Square Aviation Protractor | 5x5 Inch Pilot Navigation Tool

Master your flight planning and cross-country navigation calculations with the Douglas Square Aviation Protractor. Custom-engineered by the flight training experts at Hammond Aviation, this high-precision instrument is designed to withstand the rigors of flight school instruction, commercial pilot ground school, and real-world cockpit operations.

Measuring a compact 5 inches by 5 inches, this premium acrylic protractor is a staple in cockpit flight bags and training rooms across Canada. Whether you are a student pilot plotting your very first VFR (Visual Flight Rules) cross-country flight on a Sectional Chart or a seasoned aviator cross-checking wind correction angles, this tool delivers the absolute accuracy required for safe aeronautical navigation.

Engineered for Flight Training & Navigation:

• Custom Flight Design: Specially manufactured by Hammond Aviation to meet the rigorous performance standards required by flight instructors and aviation examiners.

• Dual-Function Scale Layout: Features exceptionally crisp, clear scale graduations that allow pilots to simultaneously measure magnetic or true tracks and plot precise distance vectors on standard aeronautical charts.

• Compact Cockpit Footprint: The space-saving 5" x 5" dimensions allow for seamless, clutter-free use on busy kneeboards during flight, fitting perfectly within standard chart pockets.

Specifications & Flight Bag Compatibility

Flight Instructor Note: The Douglas Protractor design remains one of the most reliable analog tools in modern aviation. By eliminating the moving arms found on older protractors, it allows for faster alignment with chart parallels and meridians, reducing mental math errors when under pressure.