This transparent aviation measuring ruler features a clear PVC body with a long straight ruler and a circular protractor-style center section, allowing visibility of the map or paper underneath. It serves as a highly accurate measuring tool with printed measurement graduations, angle markings, and grid lines for exact calculations. Constructed with a 1.5 mm thickness for durability, it is designed as a versatile navigational ruler combining linear and angular measurements into one compact 330 x 113 mm instrument. It is an essential tool for navigation plotting, map reading, and technical drawing for students and professionals.
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