CNP-2 Aviation Navigation Slide Rule with Temperature Stability 40C to 120C

Pilot Slide Rule Operates -40°C To 120°C Portable For Manual Navigation

KCNP-1 Aeronautical Slide Rule with Clear Visibility for Chart Details

KCNP-1 Flight Navigation Slide Rule with Angle Distance Scale Conversion

Pilot Slide Rule Operates -40°C To 120°C Oil And Seawater Resistant Training Aid

Professional Flight Navigation Slide Rule KCNP-1 Electronic Scale Tool

KCNP-1 Flight Navigation Slide Rule with Angle Distance Scale Conversion

Professional Flight Navigation Slide Rule KCNP-1 Electronic Scale Tool