PRODUCTS BRIEF INTRODUCTION: High contrast vial surrounds improve vial visibility Pitch vial for easy set of 1 and 2 percent pitch Durable, lightweight aluminum I-Beam frame Top read window for clear overhead viewing Strong magnetic edge for a reliable hold on metal surfaces Impact-resistant vial covers protect vials from damage, fogging, and job site conditions .0005"/inch accuracy in all working positions Hang hole for ease of storage All metal, anodized I-Beam frame will not rust or corrode and guarantees long-life accuracy Impact-resistant endcaps protect frame and vials Limited lifetime warranty on frame and vials PRODUCTS INCLUDE: 24" Magnetic I-Beam Level (MLIBM24) Owner's Manual Length:24 in Height:1 in Width:2.25 in Weight: 1.5 lb