The Empire 650 Series box level offers a lightweight aluminum frame for superior portability and mobility. The continuous grip frame provides an ergonomic contoured shape for a compact and easy carry solution. The impact-resistant block vial offers durability and 300 viewing capability to optimize readability in multiple positions. Patented high contrast vial surrounds increase visibility in all light conditions. Precision milled edges on both primary and secondary working surface offer reliable 0.0005/inch accuracy in all working positions. Limited lifetime warranty. No. 650.24: Length: 24 In., Material: Aluminum, Magnetic: No, Number Of Vials: 3, Pkg Qty: 1, Package Type: Hang Tag No. 650.48: Length: 48 In., Material: Aluminum, Magnetic: No, Number Of Vials: 3, Pkg Qty: 1, Package Type: Hang Tag No. 650.72: Length: 72 In., Material: Aluminum, Magnetic: No, Number Of Vials: 3, Pkg Qty: 1