Parallel Rules

Fast, straight transfers for bearings and courses. Traditional parallel rules (hinged and rolling) for laying off headings, clearing bearings, and course lines with repeatable precision—built for daily cockpit and classroom use.

Choose your style: See Parallel Rules including rolling and hinged options.
Complete the kit: Pair with Dividers & Compasses and Protractors & Triangles.
Practice & verify: Drill techniques on NOAA Training Charts for exam-ready confidence.