CNP-2 Flight Navigation Slide Rule with Angle Distance Scale Conversion Tool

Navigation Slide Rule CNP-1 for Flight Planning and Course Calculation

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

CNP-2 Slide Rule for Aeronautical Chart Use Featuring Angle Distance Conversion

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

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