This plotter is made from styrene plastic - don't leave it in the sun! It measures about 13-1/4" long.
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The American-style navigation plotter/protractor
is standard issue for lower latitudes where the meridians of
longitude are more parallel to each other. This is a deluxe
rotating-azimuth plotter made of clear vinyl plastic. It's great
value for the starting pilot! In northern latitudes, where the
meridians slope toward each other, these plotters become more
difficult to use due to visual illusions (it's harder to line the
plotter up with the meridians). Everything has its place! In
northern latitudes (for example, in Canada or Scandinavia),
aviators tend to prefer the parallel-rule plotter (the "Douglas
protractor") for measuring tracks because of the visible pie-shaped
convergence of the meridians toward the north pole.
This plotter is made from styrene plastic - don't leave it in the sun! It measures about 13-1/4" long. |