Weems & Plath 141 15″ Aluminum Arm Parallel Rule
Of all our 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.
• Brushed aluminum arms
• Polished aluminum handles
• Milled with bevelled edges
• Includes protractor scale