CNP-3 Plastic Slide Rule for Flight Navigation Scale Conversion and Plotting

CNP-1 Multi Function Slide Rule for Distance Angle and Scale Conversion

ABS Navigation Slide Rule Model CNP1 CNP2 CNP3 KCNP1 for VFR and IFR Chart Work

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

CNP-3 Plastic Slide Rule for Flight Navigation Scale Conversion and Plotting

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

CNP-3 Professional Pilot Tool for Dead Reckoning and Wind Triangle Calculations

CNP-2 Electronic Scale Slide Rule for Aviation Manual Navigation Tasks