Expert Quality, Aluminium box section levels with side view feature, comprising three highly visible solid acrylic and UV resistant vials, one magnified horizontal vial and two vertical vials, one with side view vial feature, milled base up to 1200mm. The 1.8M is fitted with one horizontal magnified vial and has an unmilled base. All the levels are electrostatically epoxy powder coated and baked for maximum protection. Fitted with shock absorbing end caps. The base has a finely milled surface (1.8M unground). Accuracy 0.5mm per 1M = 0.029° (1800mm 1mm per 1M = 0.057°) in standard position.