Empire, 24", Poly-Cast Level, Can Check If Surfaces Are Plumb & Level, Acrylic Vials Provide Plumb, Level & 45 Degree Readings That Are Accurate Up To .001", Poly Cast Frame Won't Mark Work Surfaces, Frame Made Of Tough Plastic For Long Lasting Use, Acrylic Vials Extremely Durable For Increased Longevity, Lightweight Frame Reduces User Fatigue, Ruled Edge Lets You Take Quick Measurements, Grip Zones For Improved Comfort, Built In Hang Hole Makes Storage Easy.