Multifunctional Aviation Navigation Ruler - This aviation navigation ruler serves multiple purposes, including measuring sizes and line thickness, and can even be used to draw arcs. - High-quality material: Made from corrosion-resistant plastic, designed to withstand various working conditions while maintaining accuracy. - Great for enthusiasts: The complete set provides precise measurements, making it an essential tool for aviation students and professionals. - Compact and convenient: Dimensions are approximately 14 x 5 x 0.3 cm, small enough to fit in a pocket while still offering space for detailed work. - Use cases: - Aviation students drafting diagrams and checking dimensions in coursework. - Professionals sketching layouts or verifying measurements on aircraft schematics. - Enthusiasts performing precise measurements and arc drawing in practice drawings.