Extra strong, crystal-clear acrylic. These traditional parallel rules do not have protractor markings. A new release of an old piloting favorite. Using two 45 o triangles provides an easy method of plotting and performing other chart work. With colored, high-contrast protractor scales, the triangle can be easily aligned in any direction with a chart meridian.
Direction is maintained as one triangle slides along the other to the desired position.
Available with or without handles. Navigation Tool Sets Plotting Tools Parallel Rules, Triangles, and Square Protractors Dividers and Compasses Nautical Slide Rules and Calculators Navigation Plotting Sheets and Reusable Plotting Boards Chart Lights, Chart Cases, Magnifiers, and Nav Tool Storage Binoculars , Waypoint, 2001. All rights reserved. Reproduction or publication of information contained in this site is prohibited without permission.