Plotter Used by navigators for over 50 years. For north and south courses, a small auxiliary protractor scale is printed inside the larger one and is used against a parallel latitude. Direct reading of both true courses and reciprocal. Magnetic course and bearing can be read against the variation scale. Circular base plate 5 ' inches in diameter with compass rose in degrees and quarter points and a rectangular grid for aligning the protractor on the chart.
Arms are rigid enough to trace a bearing line.
Can be used to position and chart from three identifiable shore landmark or buoy locations. On JavaScript-enabled browsers the display table will be automatically updated. Such display is for information only and is not essential for the operation. You can select any number of items prior to adding to the shopping cart. It is not necessary to add each item to the cart as they are selected.