Weems & Plath
Square Course Plotter
Used by the United States Power Squadrons for years, this plotter is a similar design to our square protractor, only it is slightly larger and incorporates a compass rose in the center to make calculating courses, bearings and variation much easier. Comes in a convenient storage sleeve imprinted with easy to follow instructions. Dimensions: 7-3/4" x 9-7/16".
Replaced by the Square Protractor.