Jeppesen's Flight Computers are the preferred manual computers of instructors and students alike. Versatile, they solve basic or sophisticated flight problems. CR Computers set the standard for accuracy, quality and dependability. Full function, full size. Perfect for the budget-conscious student. Constructed of rugged plasticized composite material. It conforms to the instructions and examples in Jeppesen manuals, workbooks and audiovisual programmess. Comes with instruction manual.