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 Slide Rule for Aeronautical Chart Measurement and Scale Conversion Tasks

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

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

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

E6B-R Slide Rule For aviation Tool for Embossed Navigation and Flight Training

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