![]() Coast and Harbor Charts, as well as an inch scale. This instrument consists of a plotter mounted on a roller. Protractor Triangle Black Markings-For NavPak Same as above, with all black markings and without handle Direction is maintained as one triangle is slid along the other to the desired With its protractor scales, the triangle is easily aligned in any direction with a chart meridian. Using two 45° triangles provides an easy method of plotting and performing chart work. This triangle is inscribed with contrast enhancing colors making it easier to use. Milled with a beveled edge, 0.19" thickness with aluminum arms and handles The unique 3 rule construction allows greater parallel walk without the diagonal creep associated with traditional designs. 022" Thickness, aluminum arms and handlesĠ.14" Thickness, Solid brass arms and handlesĪccurate and durable milled acrylic ruler with marine aluminum and handles. ![]() Without protractor markings, this ruler has the same specifications as model 140 Rigid chrome arms and handlesĠ.19" thickness. ![]() Made or extra strong, crystal clear acrylic.Īvaialble in 12", 15", 18", and 21" Models, and a 12" triple parallel.Ġ.25" Thickness. Allows courses to be measured from a convenient meridian. This tool combines the essential features of a protractor plotter and a basic parallel ruler. The middle of the bottom edgeforms the protractor center when the arms are closed. These navigator's parallel rulers are inscribed with full 180° protractor markings.
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