What is an easy job to make fine and straight enough line measurement at various work distances? No matter it is pointing at close or long distance, it is an easy job to use Berlinlasers green dot laser alignment. It gets wide range output power of 5mW to 100mW, after correct use of 5V, 9V 1000mA DC power supply and good use of inner metal heat sink cooling system, green laser module achieves continuous green laser beam and highly stable green dot projection in continuous use. The usual use of green line laser alignment applies the most qualified glass coated lens or separate crystal lens. It projects qualified green laser light and high linear quality green line. Within wide range fan angles of 10 degree to 110 degree, after production of various line lengths of 0.5 meter to 6 meters, this laser line generator makes sure of the most precise line positioning results for various precise device manufacturing works. technical data: Item: Berlinlasers green line laser alignment Output power: 5mW-100mW Laser class: IIIb Optic lens: 10-110 degree glass coated lens, separate crystal lens Adjustable focus: yes Power source: 5V, 9V 1000mA DC power supply Applications: laser cutting machine, sand milling, lumber machine, stone, wood and garment processing etc http://www.berlinlasers.com/532nm-green-line-projecting-laser-alignment