[Please Note]: The level gauge also work uninterruptedly at night, and is equipped with a night lighting double tube for your convenience. [Quality]: The marine clinometer adopts a double tube design to provide clear readings, ensuring that you can make accurate angle measurements. [Function]: Marine clinometer is suitable for navigation, docking, etc. to the stability of on the water.tool for ship , nauticasl enthusiasts, and marine maintenance personnel who demand inclination data for their. [Wide Application]: Sailing clinometer can be applied to sailboats, fishing boats, yachts, cargo ships, etc., and is very suitable for sailors, navigators, and enthusiasts. [Material]: Professional boats inclinometer is made of material, which is strong and wear to long term performance and reliability., Manufacturer: Ounfhtrttk