Empire True Blue® squares and levels are engineered to offer accuracy, durability, and enhanced readability.  These measuring instruments contain vials that are considered the most accurate available in today’s marketplace. They are produced through a proprietary process called Advanced Concentric Molding (ACM), which was pioneered by Empire. The process assures repeatability so that all True Blue vials meet the same stringent standards for accuracy, consistency, and concentricity.  True Blue can be found in more than 4000 locations throughout the US and they offer the strongest warranty in the industry.   

Empire True Blue Levels are warranted to be free from imperfections in materials and workmanship. If you have a problem with your True Blue level, Empire will replace it with a new one. With proper care, this level will be accurate for your lifetime. Bent frames void the warranty. 

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True Blue® Lifetime Warranty
(expanded version for Home Depot)

Empire True Blue Levels and Squares are warranted to be free from imperfections in materials and workmanship. If you have a problem with your True Blue level, you may return it to Home Depot for replacement or Empire will replace it for you directly. With proper care, your True Blue levels and squares will be accurate for your lifetime. Bent level frames void the warranty.