PilotStyle PS331
Rotating Azimuth Plotter €7.90This plotter will quickly and accurately plot, measure and solve your navigation requirements and problems.
To Measure the True Course
between two points on a chart, place the upper edge of the plotter along the desired course line. While holding the plotter stationary, rotate the circular protractor until the arrowed lines point North and are parellel to a line of longitude. Read the true course at the “course arrow” which points in the desired direction. The other arrow indicates the reciprocal of the desired course.
To Measure Distance
use the scale appropriate to the chart.
Plotter has scales for 1:500 000 and 1:200 000 in kilometres and Nautical Miles.
Determine Magnetic Course
To find Magnetic Course determine Variation at your position, read the Magnetic Course opposite the degrees of Variation.