DigiPas DWL680PRO WATERPROOF IP65 Digital Electronic Level, 0.05&deg;, BRIGHT LED display, 24-inch length Imported WATERPROOF IP65 CERTIFIED - SHOCK & FREEZE PROOFS; RUGGED design for professional use; Operate in all weathers, from cold winter to hot summer; wide operating temp range -4F to 140F PRECISION & EASY RE-CALIBRATION by user back to factory setting with no special fixture; RESOLUTION: 0.05 (0 & 90), 0.2 other angles, switchable display between (), slope (%), mm/M, inch/FT BRIGHTEST LED DISPLAY TECHNOLOGY ensures easy reading with handgrip. Auto Inverted Display when placed Up-side Down. SMART TECHNOLOGIES: to improve accuracy with BRIGHT LED displays in degrees, In/Ft, mm/M, % slope; Auto invert display when gauge is upside down . BUZZER SOUNDS at 0 degree or any set angle RUGGED DESIGN with STRONG rubber end-caps to wistand strong impact of maximum protection.