1. DOUBLE MEASUREMENT SCALE: This inclinometer features two different scales that provide precise readings from ±5° on the upper scale to ±35° on the lower scale, allowing you to monitor boat heel angles with exceptional accuracy whether you are sailing in quiet or demanding conditions. 2. VERSATILE MARINE AND VEHICLE TOOL: for checking the heel angles of sailboats, monitoring motor boats, and ensuring correct alignment in vehicles and equipment. This clinometer is essential for both recreational sailors and professional sailors. 3. Reliable Construction: Designed to maintain position and accuracy even in harsh waters, this inclinometer continues to provide reliable measurements regardless of marine conditions, helping you optimize performance and safety during your adventures. 4. Clear Visibility: The distinctively displayed white dial with contrasting markings allows quick and easy readings at a glance, helping you maintain the right course without distraction when sailing or adjusting the position of your .