48" Electronic Level360° Digital Measuring. ,Display always reads upright. ,Select from degrees % slope or audio (beep) alert. ,Certified Vial Accuracy; in top read position: (.029°) 1/32" over 72". ,Digital accuracy tolerance: at 0° 90°= ±.1° Between 1° & 89° = ±.2° ,Patented red pads on endcaps grip walls and flat surfaces. ,Audible tone signals plumb and level condition for eye-free installations. ,Level accuracy guaranteed for life; vials will never fog leak or require adjustment. ,1year warranty on Electronic module lifetime guarantee on vials. ,BENT LEVELS VOID WARRANTY - STABILA levels are consistent and accurate in the “vial up” or “vial down” positions. Our bright, crystal-clear vials are polished and easy to read through a complete 300-degree range. STABILA’s sensitive bubbles reflect the slightest deviation, detected by spring-steel hair-line indicators, positioned in precise grooves inside the barrel of each vial. Straight, Strong and Tough - Like No Other Every STABILA level has a precision straight edge over its entire length. You can trust STABILA's accuracy job after job because of their rugged construction. Our levels are made to resist heavy and repeated drops, blows and twisting—the everyday rigors of rough jobsites.