The Stanley FatMax I-Beam Magnetic Level range provides the ultimate in terms of overall strength and performance. They are fitted with solid block acrylic vials that have been machined to exacting tolerances to ensure that the movement of the bubble is smooth and comes to rest quickly. The Stanley FatMax I Beam Magnetic Level range have a small magnifying area in the centre which makes reading the position of the vial easier. It has rubber end caps which protect the level against damage if dropped and a curved body profile which allows the level to be used for gradients on drainage and pipe work. Accuracy: 1.0mm/m.The Stanley FatMax I Beam Magnetic Level 1-43-556 is 1200mm (48in) in length.