Weems & Plath Navpak Ideal for beginner or expert. Includes the following high quality Weems & Plath plotting tools: Two #102 - 45 degree protractor triangles, one set of the #140 - 12" parallel rulers, the #133 course plotter, one pair of #260 - 6" matte nickel dividers with replaceable points, and one #2 pencil, all in a reusable plastic pouch. Complete with comprehensive instructions. Dimensions: 7-1/4" x 16-5/8". Wt. 13 oz.