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
• 15.7 cm diameter.
• Solves high- and low-speed problems
• Automatically compensates for temperature rise
• Takes compressibility factors into account