The Allen Aerovane wind indicator & clicker is a small, inexpensive wind indicator for dinghies and small keelboats. The Aerovane has a built-in counterweight that ensures an accurate indication of the apparent wind angle. The counterweight also prevents the clicker from "fluttering" in strong winds. There is a reflector on the underside to make the indicator easier to see in the dark. The 19cm long Aerovane is mounted on the masthead. An optional stainless steel clip is required for mounting. Further details: