- A lightweight, balanced vane-arm mounted above two reference arms for boats up to 26ft, enabling the helmsman to accurately judge the angle of the apparent wind. Tough nylon
• Fitted with reflective material for night use
• Snap fit mast attachment for easy removal and replacement as required
• Reference arms adjustable to any angle
• Length of Vane Arm: 25cm/10
• Height overall: 28cm/11
• Weight: 25gm.