... , laser level, digital level, laserliner, laser crossliner, self-leveling crossliner, square laser, rotary laser, anddistance measurerSpirit aluminum ... 1 horizontal, 1 vertical, The accuracy achieves 0.1°Self-leveling crossliner1) Cross section, soft handle and movable marker2) ... accurate cross line, vertical line, horizontal line and self-leveling +/-3or 6-degree5) Chalk out the equidistant point ...