1Wide Applications: Pointer water level gauge has a wide range of applications and is suitable for RVs, yachts, fishing boats, and ships. 2Smart Indication: This water level meter is equipped with an empty full indicator, which can accurately display the water level of the tank for users to know the water quantity at any time. 3Superior Visibility: The level gauge has a built in backlight that ensures clear visibility in all lighting conditions, making it easy for you to read the level information. 4Compact Size: 2 inch (52mm) size makes this level gauge perfect for mounting on the dashboard of a vehicle or equipment without taking up too much space. 5Durable and Reliable: The water level indicator gauge is made of durable materials with good resistance to shock and vibration to maintain reliability in a variety of harsh environments.