- Pocket sized version 4" diameter,
perfect for in the cockpit
- The original standard issue circular
slide rule for pilots
- Solid construction with performance and
durability
- Essential equipment for anybody sitting
flight crew exams
- Includes a free vinyl protective case !
Whether you are solving wind triangle
problems, polar grid navigation or pressure pattern flying they will prove their
usefulness and versatility constantly. Useful in high and low speed problems
they automatically compensate for temperature rise and compressibility
factors.
