Weems & Plath Parallel Ruler with Brushed Aluminium Arms

An essential item in any proper navigation kit, the aluminum parallel ruler is used to plot direction on your nautical chart. The aluminum parallel ruler is, essentially, comprised of two straight-edges hinged so that they maintain the same angle. By alternating the moving edge, and securely holding down the non-moving edge, you can move the aluminum parallel ruler about the chart while still maintaining the same angle. - Brushed aluminum arms - Polished aluminum handle - Milled with bevelled edges - Includes protractor scale Length Thickness Weight 12" 6 mm 154 g 15" 6 mm 213 g 18" 5 mm 313 g 24" 7 mm 368 g