DBPOWER Extended Ruler 40M/132FT Laser Meter IP54 Water, Dust, Crash Proof Laser MEASURE RANGE: 0.05~131 feet. Accurate to within 1/16-in (1.5 mm) BIGGER BUTTON for better control; Bevel edge design for sure grip and comfort. SUPER DURABLE: Strong Waterproof, Dustproof, Crashproof; Excellent performance for outdoor using EXTENDED RULER: enables you measure the border, corner and slot BIGGER SCREEN:LCD backlit, save and recall the last 20 sets of measure data