Description: Made of good acrylic material and very durable Printed with black easy-to-read numbers and scales Especially for Civil Aviation Plane High accuracy for measuring and plotting Incredible ease of use, making flight planning much easier and faster. Specification: Material: Plastic Size: Approx. 23.5 x 4.5 cm / 9.25 x 1.77 inch Thickness: Approx. 5 mm / 0.20 inch Package Includes: 1 Piece Flight Slide Ruler
