Bi-Rola Rule Combination Plotter - 350mm

The Bi-rola Rule is a rugged plotter that is used by professional navigators because it is quick and easy to use. Patented vertical and horizontal rolling motion simplifies course and plotting calculations. - Unique radial arm allows you to automatically include compass corrections in course plotting - Roller body has protractor markings and nautical mile scale - Radial arm has Loran interpolator scales and 200 milimeter rule - When radial arm and body are used jointly, the bi-rola rule becomes a 17 inch (440mm) divider - Speed/time/distance table included - Protective, durable vinyl pouch included - Easy to follow instructions included

Product code: 80.50.140


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