Single-piece, aluminum box-beam structure increases durability and accuracy Block vials provide maximum accuracy of 0.0005 in./in. (0.5 mm/m). Yellow powder-coated body with high-visibility accents easy to spot on jobsite Magnetic versions available with silver anodized finish Shock-absorbing end caps hold up to heavy use Non-marring side bumpers will not damage finished surfaces Hang hole makes storage a cinch Rubber-gripped hand hole designed with comfort in mind Machined leveling surface improves accuracy