Features Ease to use without any training. Efficient One-man operation . Reduces down time and energy costs. Reduces vibration and noise. Prolongs belt and pulley life. This tool is magnetically mounted on the pulley and check the alignment of various pulleys. Show offset, vertical and horizontal angle simultaneously Technical Data Laser Accuracy< 0.5 mm (offset) < 0.02° (angle) Laser wavelength650 nm Laser line width1mm @ 2 m Output power< 2 mW Measuring distance10 m ControlsLaser ON/OFF button switch Mounting methodStrong magnets Operating time10 hours Operating temperature-20-40 Storage temperature-30-60 Battery type2 AA batteries Weight430g Dimension145*40*40mm HousingAluminium alloy,anodized Reflector Accuracy< 0.5 mm (offset) < 0.02° (angle) Reflector size41mm*27mm Mounting methodStrong magnets Weight500g Dimension145*40*40mm HousingAluminium alloy,anodized Carrying Case MaterialBlack,high density polyethylene InsertDie-cut foam Dimension210*167*70 mm Total weight1.3 kg