Aluminium body with magnetic base and solid block acrylic vials that have been machined to exacting tolerances to ensure the movement of the bubble is smooth and comes to rest quickly. Small magnifying area in the centre which makes reading the position of the vial easier. Rubber end caps protect the level against damage if dropped and a curved body profile allows the level to be used for gradients on drainage and pipe work. Accuracy: 1.0mm/m. Length: 1200mm (48").