For accurate, repeatable tuning of 3/16", 7/32", or 1/4" cable diameters of a sailboat's standing rigging. Aid in setting the tension of supporting cables for radio towers, large tents, and other structures.
A single book providing a complete manual back-up for all celestial navigation needs. The content is identical to the United States Naval Observatory edition.
Harken's patent-pending stud-bolt mounting system allows one person to quickly install a winch through predrilled holes on deck without removing the drum.
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