Quick Reference Celestial Navigation Card — a simplified, yet complete celestial navigation system. Includes everything you need: sextant use and corrections, star finder for 18 stars, data entry form, and step-by-step sight reduction and plotting procedures. May be scored and separated; a large portion fits in the sextant case for quick reference, and a small part acts as a waterproof data reduction card. Additional product details: 8.5 x 11-inch durable plastic card, dashboard/panel mounting options noted in specifications, compatible with tablets and smartphones for reference; Package dimensions approx. 11.42 x 9.09 x 0.35 inches. Manufacturer model number 132. Material: Plastic. Color: Black.