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✅ Laser Type: 4 Vertical Lines, 1 Horizontal Line, 1 Downward Point ✅ Wavelength: 510nm (Floor Point: 650nm) ✅ Light Source: Class II / Class IIIA, High Power ✅ Horizontal & Vertical Accuracy: ±1mm / 7m ✅ Right Angle Precision: 90° ±0.025° (±1mm / 3m) ✅ Downward Point Accuracy: ±1mm / 1m ✅..