CNP-2 Transparent Plastic Navigation Slide Rule for Pilot Chart Interpretation

CNP-2 Electronic Scale Slide Rule for Pilot Training and Paper Chart Navigation

CNP-2 Transparent Plastic Navigation Slide Rule for Pilot 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

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

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