360° Rotary Laser Level Automatic Self-Leveling 500M Green Beam Measure Tool

Line up the entire work area from floor to ceiling. Leveling Accuracy: Horizontal:±20″, Vertical:±20″. 1 X Rotary Laser. Light Source: Laser Diode, wavelength: 532nm. The speed is adjustable, and the scanning speed includes 5 knots: 0-60-120-300-600rpm.