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 accurac