Overview
Enlist the help of our CR-3 Circular Computer to assist you in everything from solving wind triangles, to polar grid navigation and pressure pattern flying.

Features
Versatility and solid construction make this a reliable choice. Includes an instruction manual and vinyl carry case. 6-inch diameter.

    * Solves high- and low-speed problems
    * Automatically compensates for temperature rise
    * Takes compressibility factors into account