[Quality]: The marine clinometer features a double tube design to provide clear and accurate angle readings. [Wide Application]: This sailing clinometer is suitable for use on sailboats, fishing boats, yachts, and cargo ships, making it ideal for sailors, navigators, and marine enthusiasts. [Function]: Designed for marine navigation, docking, and stability assessment, this tool delivers reliable inclination data for nautical applications and marine maintenance. [Please Note]: The level gauge operates effectively at night and includes a night lighting double tube for enhanced visibility in low-light conditions. [Material]: Constructed from durable acrylic material, this professional boat inclinometer offers long-term performance and reliability. Color: White Material: Acrylic Package Contents: 1 x High Precision Marine Inclinometer Note: This package includes only the items listed above. Other products are not included. Note: Due to light reflection and differences in display screens, the color of the item may vary slightly from the images shown. Measurement error is +- 1-3 cm.