Weems & Plath Compute-A-Course Compact Multi-purpose Plotting Tool Ventilator *** use Option (1) to

*** use Option (1) to select Colour and then Option (2) to select Size ***

and compatible with MA-500TR Class B AIS Transponder

Weight: 10 g

printing the design onto the reverse side to create a mirror image

100% waterproof RF-welded seams

Weems & Plath Compute-A-Course Compact Multi-purpose Plotting Tool Ventilator *** use Option (1) toWeems & Plath Compute A Course is a compact, multi purpose plotting tool, an ideal addition to general boating or commercial navigational tool sets. The Compute A Course navigation wheel can be used for position fixing, course plotting, and distance measurements. Using the log scale located in the instructions on the back of the vinyl storage sleeve makes time and distance calculations a breeze. Best used for course plotting, distance measuring &