The Weems and Plath Compute-A-Course is a compact, multi-purpose plotting tool. An ideal addition to your general boating or commercial navigational tool sets.
This navigation wheel can be used for position fixing, course plotting, and distance measurements. Using the log scale makes time and distance calculations a breeze.
Comes packaged in a vinyl storage sleeve with instructions for the navigational tool on the back.
Has a Weems and Plath lifetime warranty.