Kapro 990V-41-48M Zeus Magnetic Vision 48" Box Level With Plumb Site And Illuminated Horizontal Vial Computer optimized industrial strength reinforced aluminum frame with Keflon anti-stick coating providing a level that will last a lifetime and can be cleaned quickly and easily.^Two plumb site dual-view solid acrylic vertical vials and an illuminated (lighted) magnified solid acrylic horizontal vial provides easier viewing in dim areas and no neck strain when viewing the plumb reading^Two finely milled read surfaces; shockproof end caps and air-cushioned ergo grip non-slip handles provide accuracy and security if the level is dropped^Rare-earth magnets give the level strength to stay on metal surfaces even in construction zones^Level accuracy is .0005" per inch and comes with a lifetime vial warranty