Not simply used for temporary line projection work, in order to get clear enough line projection constantly, it would be quite efficient solution to adopt Berlinlasers 50mW Pro red line laser alignment. It emits the purest red laser light from 635nm red laser diode, on basis of much visible laser beam emission than 650nm red laser diode and quite low laser beam divergence, 635nm red laser module enables the most accurate dot projection in distance. Designed with the best quality glass coated lens and quite strict laser beam stability tests up to 24 hours, it is keeping quite high laser beam transmittance and highly clear red reference line projection in distance. On basis of easy selection of glass coated lens or separate crystal lens, after quite easy adjustment of laser beam focus, red laser module achieves extremely fine and clear line projection in distance easily. Technical data: Item: Berlinlasers 50mW pro red line laser alignment Wavelength: 635nm Laser class: IIIb Optic lens: 10-110 degree glass coated lens, separate crystal lens Electric power source: 9V 1000mA DC input power supply Applications: laser cutting machine, textile garment processing, sand milling, laser car wheel alignment http://www.berlinlasers.com/pro-red-line-projecting-laser-alignment