Navigation Protractor Triangles

Sold Individually

Dimensions: Short sides 7.75" (197 mm), Long Side 11" (279 mm), 0.116" thick (3 mm)
Weight: 2.2 0z.

$14.95   ...item# T101



The Protractor Triangle with Handle is inscribed with contrast enhancing colors making it easier to use. Utilizing two 45 triangles, the protractor triangle with handle provides a straightforward method of plotting and performing chart work. With its protractor scales, this protector triangle's handle is easily aligned in any direction with a chart meridian. Direction is maintained as one triangle is slid along the other to the desired position. The protractor triangle with handle is crafted of durable and clear vinylite.

We have notes on How to use Plotting Triangles in our Nav Blog.

Many professional navigators prefer this method as it is typically more accurate than parallel rulers or rolling plotter. They take a bit of practice, but are easily mastered, and then cherished for all such applications.

(Note there is an less expensive version of these from C-Thru Ruler company but they are just enough thinner to be more difficult to use underway, since we rely on sliding one against the other.)

7/31/13 

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