Windex XL 30 Inch Wind Direction Indicator

For ocean racers and keel boats with masts over 15m.The Windex XL wind direction indicator is a precision instrument which can indicate a change in apparent wind angle of as little as 1 degree. Windex consists of a moving vane and two fixed reference tabs, and the suspension consists of a sapphire bearing rotating on a stainless steel pin. The Windex responds quickly and accurately at wind speeds as low as 0.1 metre/second 0.2 knots. Light reflecting material is fitted to both the front and rear end of the wind vane, plus both the two reference tabs for good visibility during night sailing. Length of vane 560mm. Weight 110g. Mounting base has same bolt hole pattern as Windex 15 Can be fitted with Windex Light