This giant, 11" x 2-3/4" all-in-one RV level provides visual side-to-side and front-to-rear leveling assistance for trailers, fifth wheels and motorhomes. Level Master can be viewed from the driver's seat to help locate the best level location for parking your RV. Each mark on the side-to-side scale indicates one inch of blocking. The adjustable front-to-rear scale can be easily viewed while operating your tongue jack. Easy to install on your trailer or motorhome and adapts to fifth wheel with bracket.