In order to make clear and fine enough cross line alignment, out of hand reaching, it is making good job after the use of Berlinlasers 515nm green cross line laser module. It is making good use of metal heat sink cooling system and APC driving circuit board inside its durable metal housing tube. Being made with 16mm and 26mm diameter metal housing tube, this green cross laser achieves good thermal emitting, and increasing accuracy forest green cross line projection in long time use. The advanced use of glass coated lens enables wide range fan angles of 10, 15 and 110 degree. This green cross line laser module is projecting various cross line lengths within 0.5 meter to 6 meters. It enables proper installation, and adjustment of laser beam focus. After correct use of glass coated lens degree, within the maximum installed distance of 3 meters, this green cross laser makes sure of high accuracy and quick response cross line alignment in all occasions perfectly. Technical data: Item: Berlinlasers 515nm green cross line laser module Output power: 5mW-50mW Laser class: IIIa, IIIb Optic lens: 10, 15 and 110 degree glass coated lens Adjustable focus: yes Applications: military targeting, laser medical therapy device, laser alignment for screen printing system and lab experiment etc http://www.berlinlasers.com/515nm-green-cross-line-laser-module