Laser crosshair line generator is always producing much more complex pattern beam than simple dot or line aligning device, which is also getting different applications. After special use of qualified glass coated lens, available with different fan angles of 10, 15 and 110 degree, cross laser modules are generating various dimension cross line sources with different line length and line thickness at given distance. After proper adjustment of cross line targeting direction and laser beam focus, it achieves the most satisfied measuring precisely and accurately.