Electronic 48" spirit level designed to withstand harsh everyday conditions on construction sites. Features illuminated digital displays, and acoustic guidance for quick alignment of components without looking at the level. Offers up to 400hrs operating time. Display modes include degrees, percentage, mm/m, in/ft as decimal and fraction. Can easily be cleaned under water, and does not need to be recalibrated after being dropped or following temperature fluctuations. Rigid Aluminium Profile Non-Magnetic Base Accurate to 0.05 Backlit LCD Display 2 x 90° & 1 x 180° Vials Auto Power Off in 7.5 Minutes to 2 Hours IP67: Water-Resistant Acoustic Guidance 1 Year Guarantee Rigid Aluminium Profile Non-Magnetic Base Accurate to 0.05 Backlit LCD Display 2 x 90° & 1 x 180° Vials Auto Power Off in 7.5 Minutes to 2 Hours IP67: Water-Resistant Acoustic Guidance 1 Year Guarantee