Weems & Plath Aluminum Arms Parallel Rule

Description

An essential item in any proper navigation kit, the aluminum arm parallel ruler is used to plot direction on your nautical chart. It is used to plot direction on a nautical chart from any convenient meridian or compass rose. The two straight-edged rules are connected to maintain the same angle. By walking the rules across the chart and securely holding down the non-moving rule, you can effectively plot a course. This sturdy, acrylic parallel ruler is easy to use and is a necessary tool for every seagoing navigator. Features: Brushed aluminum arms. Polished aluminum handle. Milled with beveled edges. Includes protractor scale.