The Folding Navigation Plotter Scale Ruler is a practical tool for flight training and navigation. Its course line runs the full length of the plotter, allowing accurate true course measurement using lines of latitude or longitude. Scales for WAC (1:1,000,000), VNC (1:500,000), and VTC (1:250,000) are calibrated in nautical miles, statute miles, and kilometers. The flexible bend design allows the plotter to curve around charts in the cockpit, making it easy to use in tight spaces during flight. Compact and portable, it folds neatly to fit into any flight bag—ideal for student pilots and seasoned aviators alike.