Of all the traditional parallel rulers, the Weems & Plath 141 15” (381 mm) Brushed Aluminium Arm Parallel Ruler is always the best seller. This sturdy acrylic parallel ruler is easy to use and is a necessary tool for every seagoing navigator.
- Brushed aluminium arms
- Polished aluminium handles
- Milled with bevelled edges
- Includes protractor scale
