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Whenever users are looking for an efficient and easy dot measurement, no matter it is pointing at close distance or long distance, it should be a very nice job to try advanced laser tech applying device, such as a 515nm green dot laser module.
作者danielpower
In order to make clear and stable enough dot alignment, no matter close distance or long distance, it is an easy job to make use of a 515nm green dot laser module. It is performing much better than laser pointer. It is not only adopting inner metal heat sink cooling system, but also external AC/DC adapter. It is able to generate highly clear and stable forest green dot at various work distances.
http://www.berlinlasers.com/515nm-green-dot-laser-module
The most important design of adjustable focus optic lens enables immediate laser light concentration, this 515nm green dot laser module achieves the most precise forest green dot projection quickly. It is getting easy selected output power of 5mW to 50mW. Besides its formal use of industrial dot alignment, this green laser alignment also makes satisfied dot indication for military targeting, laser medical therapy, and lab experiment works etc.
http://www.berlinlasers.com/