General description Stabila 96-2 Extra strong double plumb ribbed box section levels are constructed from an extra strong light metal rectangular profile. They feature gripping ridges and removable end-caps made from two materials, which are equipped with patented anti-slip stops for enhanced stability. Technical specifications Length: 2440 mm (96 in) Measurement accuracy in 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: Available on levels up to 120 cm; levels over 120 cm do not have milled surfaces