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Scales in Nautical Miles on front and Statute Miles on reverse
When the top edge of the plotter is aligned with the proposed track the heading to steer (zero wind) is read from the rotating azimuth protracotr paralleled with a meridian of its grid lines. Distance to destination is read on the 1:500,000 or 1:1,000,000 scales reading each way from the centre of the rotating protractor. Scal...
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