Empire em75.48 Box Beam Level, 48 in L, 3-Vial, Magnetic, Aluminum

True Blue vials are accurate to within 0.0005 in per in in all 10 level and plumb working positions. Dual molded rubber endcaps for extreme shock resistance and a 300 deg view top-reading level vial. Rare earth magnets for super-strong hold onto ferrous surfaces.