1. 55Degree Inclinometer for Boats, Pendulum, Navigate with this powerful marine inclinometer with confidence. Its swing pendulum calibrated to 55 degrees enables precise tilt measurement even in challenging sea conditions. 2. Marine Inclinometer with 55Degree Pendulum Swing, designed for naval use, this inclinometer delivers precise tilt measurement capabilities. The swinging design and 55degree pendulum accuracy make it an indispensable navigation tool for boaters. 3. 55Degree Inclinometer, Tilt Meter. This durable and accurate inclinometer is specifically designed for marine applications. It provides precise tilt measurements with a 55degree swing pendulum. 4. Rugged 55Degree Inclinometer, Swing Inclinometer. This nautical instrument is built to withstand the rigors of the marine environment. Featuring a 55degree swing pendulum, it delivers accurate tilt measurements for boats, ensuring safe navigation.