EUC Weems & Plath Weems Parallel Plotter

EUC Weems & Plath Weems Parallel Plotter Our most popular plotter! This instrument consists of a plotter mounted on a roller. The plotter contains distance scales at 1:20 000 1:40 000 and 1:80 000 to fit the N.O.S. Coast and Harbor Charts as well as an inch scale. Included are a semi-circular protractor for measuring courses and bearings against a meridian on the chart and two quarter circle protractors for measuring courses and bearings against a parallel of latitude. Courses and parallel lines are transferred and kept parallel by means of two rollers which are mounted on a slide axis. Used for measuring or laying off courses and distances on a nautical chart. Dims: 3.5" x 12.5