This huge all-in-one RV level provides visual leveling from the driver?s seat, giving improved visibility with vivid color bars. It offers horizontal and vertical leveling so you?ll always be square. The leveling bars are encased in UV-resistant plastic. no leaking or rusting sometimes associated with other levels! Each mark on the side-to-side scale indicates one inch of blocking. Easy to install on your trailer or motorhome and is adaptable for a Fifth Wheel with the 14-8078 bracket kit.