Jeppesen Sanderson CR-3 Circular Computer
Jeppesen CR Computers do everything the E6B style computers do and much more! The CR assists pilots and navigators in everything from solving wind triangles, to polar grid navigation and pressure pattern flying.
The CR-3 is versatile and solidly constructed to make it a reliable choice. Includes an instruction manual and vinyl carry case. Solves high- and low-speed problems. Automatically compensates for temperature rise. Takes compressibility factors into account.