If users are looking for the most efficient dot aligning solution for any industrial precise device manufacturing work fields, not simply relying on any manual dot aligning device, it would be much more efficient solution for users to adopt 100mW blue dot laser module. It makes the most advanced laser tech innovation. Not the same as a blue laser pointer, after advanced used use of external DC input power supply and inner cooling system, this blue laser alignment tool is a real and industrial stabilized dot aligning device, which is able to work with high stability and high accuracy dot projection at great distance effectively. Comparing with formal blue laser pointer, 100mW blue dot laser module is not limited for temporary dot positioning work, but should have to work for quite long time. It is adopting quite small size tube diameter of 16mm, however, after basic equipment with APC driving circuit board and metal heat sink cooling system, it keeps work with constant output power supply and electric current supply. When blue laser dot alignment is continuing within 8 to 10 hours, after proper adjustment of laser beam focus and laser dot targeting direction, it achieves high precision dot measurement at great distance effectively. Technical data: Item: Berlinlasers 100mW blue dot laser module Wavelength: 445nm Laser class: Glass coated lens Adjustable focus: yes Applications: laser marking machine, laser showing, laser engraving machine, drilling system etc http://www.berlinlasers.com/445nm-blue-dot-laser-module