If precision is important in the location of the projected dot or line , then our 218 and 219 series Red Laser Dot Projecting Diode Modules, and Red Laser Line Projecting Diode Module, are the right choice for your laser alignment application. These units perform like an Industrial Laser Pointer, portable, durable and precise. Align the beam with the case or fine tune with in your housing assembly for precise targeting. The adjustable head of this diode module will enable you to fine tune the alignment of the projected dot or line to the case and target. These units also offer two options for the power switch, a click on/off switch as well as a pressure switch, easily interchangeable. These units are also battery powered, operating off standard AAA or LR44 batteries.