Parallel Rules

$29.95

Of all Weems and Plath traditional parallel rulers, the 15 inch Brushed Aluminum Arm Parallel Ruler is the best seller. This sturdy acrylic parallel ruler is easy to use and is a necessary tool for every seagoing navigator. They are used in the chart navigation module to find latitude and longitude and transfer compass courses on the chart.

  • Brushed aluminum arms
  • Polished aluminum handles
  • Milled with bevelled edges
  • Includes protractor scale