CNP-2 Transparent Navigation Slide Rule for Flight Schools and Ground Training

CNP-3 Chart Navigation Tool for Pilots Students and Private Aviation Use

CNP-3 Professional Grade Slide Rule for Pilot Training and Chart Interpretation

CNP-1 Professional Slide Rule for Pilot Training and Ground School Use

CNP-3 Slide Rule for Aeronautical Chart Measurement and Scale Conversion Tasks

Lightweight CNP-3 Navigation Slide Rule Designed for Portable Flight Use

Flight Training Slide Rule CNP-2 for Chart Measurement Angle and Distance Calc

CNP-1 Professional Slide Rule for Pilot Training and Ground School Use