General description Stabila 96-2 Extra strong double plumb ribbed box section levels are constructed from an extra strong light metal rectangular profile, featuring gripping ridges and removable end-caps made from two materials. The removable end-caps are equipped with patented anti-slip stops for enhanced stability. Technical specifications Length: 122 cm (48 in) Measurement accuracy (normal position): 0.029° = 0.5 mm/m Overhead measurement accuracy: 0.043° = 0.75 mm/m Vials: 2 vertical vials, 1 horizontal vial Milled measuring surfaces: Present on levels up to 120 cm, not available on levels over 120 cm