8 lines 9 points laser level (4V4H1D)self leveling rotary laser level
Horizontal Accuracy: ± 1mm/5m. Vertical Accuracy: ± 1mm/5m. Automatic leveling range: approximately ± 2.5 °. Zenith Accuracy: ± 2mm/3m. Line Laser wavelength: 635nm. Line Laser wavelength: Next-to-point 1 × 650nm. Working distance: indoor working radius of 10m. Using detectors: working radius of not less than 50m. Laser power: 1mw or less (safety standards 2). Continuous