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 Aid to Navigation Rule
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A 16" x 6" Weems & Plath reference slide rule that identifies the most common U.S. Aids to Navigation plus 38 navigation aids definitions. It displays 12 boater's Rules of the Road and identifies bridge lighting and intercoastal Waterway aids.There is a built in magnifying lens to make the definitions clearly readible. A handy item to have in your boat's navigation drawer!
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