CNP-1 Professional Slide Rule for Pilot Training and Ground School Use

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

CNP-1 Professional Slide Rule for Pilot Training and Ground School Use

CNP-1 Navigation Slide Rule for Flight Training and Paper Chart Navigation

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

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

CNP-1 Precision Slide Rule for Manual Navigation and Course Correction