Empire e75 Series True Blue Box Level - 72"Empire e75 Series True Blue Box Level 72" EMPIRE Level has earned the trust of the construction trades by delivering a broad range of innovative solutions focused on layout applications and box levels are no exception. Box levels deliver superior durability to survive the jobsite with robust frames designed to protect accuracy over time, ensuring true performance you can trust. The e75 Series TRUE BLUE Box levels deliver best in class accuracy,