15" Parallel Ruler - Brushed Aluminum
Weems & Plath navigation tools are reliable and easy to use. 15" parallel rulers are a necessary tool for every seagoing navigator to measure or lay off courses and distances on a nautical chart. These are built to last - constructed of durable, clear acrylic that is milled with bevelled edges. Each also includes a protractor scale.
Brushed Aluminum Arm Parallel Ruler