Updated version of Breton and Portland PlottersMovable compass rose gridEdges graduated in inches and centimetersPencil and sharpener includedLifetime warranty
This navigation tool is versatile and can be used to lay off a course or a bearing, measure distance between any two points, plot a position on a chart from a given set of coordinates, or determine the coordinates of a position on a chart. It is an update
Brand: Weems & Plath, Model: 255