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

CNP-2 Slide Rule for Manual Navigation on VFR and IFR Aeronautical Charts

Navigation Slide Rule CNP-1 Designed for High Altitude Humid Environments

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

CNP-3 Slide Rule for Air Navigation Distance Angle Conversion 38.1x7cm

CNP-3 Flight Planning Slide Rule for Manual Course Calculation and Scaling

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

Aeronautical Slide Rule with Detailed Maps and Terminal Area Information