Box section levels made from high quality aluminium with three permanently fixed shock resistant acrylic UV resistant vials, 300mm – one horizontal and one vertical vials, 600mm, 900mm and 1200mm – one horizontal and two vertical vials, precision milled bottom. V-groove for levelling pipework. All the levels are electrostatically epoxy powder coated and baked for maximum protection. Fitted with shock absorbing end caps. Accuracy of 0.5mm per 1m = 0.029 degree in standard position.