A transparent compass rose for measuring the course between two points, or the bearing from a known object. A second rose can be set for magnetic variation, so true and magnetic courses can be read. Very easy to use. Includes instructions. 7-1/4"W x 8-1/2"H.
The West Advisor articles have answered boaters' questions and provided solutions to boating problems for more than 20 years. West Marine has compiled one of the Web's most comprehensive collections of technical boating information articles.
Related West Advisor Articles