Made with the professional in mind, the P.R. 500 Rolling Plotter has a considerably larger body than the smaller Bi-Rola Rule (155). Built to take rigorous use aboard commercial and blue water vessels, this rolling plotter provides one of the easiest methods invented to plot courses.

• Patented 4-way rolling motion
• Roller body includes protractor markings every 1/2 degree
• 1-1/4 inch (31.75mm) magnifying lens for enhancing chart data
• Easy to follow instructions
• Packaged in protective, durable vinyl pouch
• Durable transparent plastic & brass construction
• Made in New Zealand