Enhanced Visibility with Green Liquid: Our RV level bubble features a high-visibility green liquid, 30% clearer than traditional white, ensuring easy readability in lighting conditions. The bold -7to +7 numerical scale with precise inch-level adjustment marks allows for quick, error-free leveling. Robust and Weather- Design: Constructed from ABS plastic with flex tube assemblies, this leveling system withstands temperatures ranging from -40F to 180F. Its IP67 waterproof rating guarantees performance in all weather conditions, including full submersion. Accurate Bi-Directional Leveling: This 2-pack system enables simultaneous monitoring of front/back and left/right tilts. Equipped with damped fluid technology, it offers an impressive 0.1 accuracy. Tilt-to-inches markings provide a straightforward method for achieving perfect balance in RVs and boats. Easy Installation Options: Each level comes with a strong adhesive for a quick, no-drill application and four stainless steel screws for a more permanent installation. This dual approach ensures that the levels can be securely attached to any flat , including RV exteriors and boat decks. Versatile Use and Long-Term Reliability: Ideal for a wide range of outdoor vehicles such as RVs, campers, travel trailers, boats, and trucks. This leveling system is essential for maintaining stability on uneven terrains or slopes. Color:Black Material:plastic Package Contents: 2 * Rv Level Bubble Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.