... like spirit level, laser level, digital level, laser liner, laser crossl All kinds of measuring tool like spirit level, laser level, digital level, laserliner, laser crossliner, self-leveling crossliner, square laser, rotary laser, anddistance ... on body3) Scale on second level4) Find accurate cross line, vertical line, horizontal line and self-leveling +/-3or 6-degree5) Chalk out the equidistant ...