This sturdy 12-inch (30.48cm) parallel rule with brushed aluminum arms is inscribed with a protractor scale. 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. 12-inches (30.48cm) long Includes protractor scale Brushed aluminum arms Polished aluminum handle Milled acrylic with beveled edges Protective plastic sleeve Lifetime warranty WARNING: This product can expose you to chemicals including lead, DEHP, and/or wood dust which is known to the State of California to cause cancer or birth defects or other reproductive harm. Wash hands after handling. For more information, visit www.P65Warnings.ca.gov.
