Like all Davis Windex wind indicators; the secret to the Windex 15 is in the sapphire jewel suspension bearing, large fin-low inertia vane, and easy-to-read, fully adjustable tacking tab system. Windex is the perfect choice for all cruising and racing boats 15 feet (4.6 meters) and bigger.
Reflector tape on the vane and tacking tabs make it easy to see day and night. With proper installation, Windex vanes are a sturdy choice that offers many years of use. Wind tunnel tested to wind speeds of 80 knots! A bird-proof spike extends another 10 inches up (24 cm) above the vane to discourage birds from landing. Windex 15 has a 15 in. (38 cm) vane. Includes through-bolt or drill and top mounting socket - 5/16 in. -18 stainless stud, washers and nut. Stands 12.75 in. (32 cm) tall and weighs just 3.6 ounces (101 g). Replacement vane (sold separately) also available.