Stablia 196-2 LED Illuminated Spirit Level is a high-performance spirit level with two built-in LED light sources for illuminated vials that give optimum clarity of display. Intense, uniform illumination of both the horizontal and vertical vial, each vial can be individually switched on and off. Robust lighting system suitable for use on building sites. Uses strong light metal rectangular profile with ribs. The 2 milled measuring surfaces, with finger grip opening: 1 at 60cm, 2 at 120cm. Measuring accuracy: in the normal position 0.029° = 0.5 mm/m, overhead measurement 0.029° = 0.5 mm/m. Rapid battery replacement: battery replacement pack with 2 LED units - fast on-site battery change. One LED unit contains two replaceable CR2016 button cells.