Different from a simple blue laser pointer only used for temporary dot positioning works, in order to make highly stable and reliable dot alignment at various work distances, it always makes good job with a high brightness beam emitting tool, such as a Berlinlasers 445nm blue laser diode module within 50mW to 100mW.
The adoption of a metal heat sink cooling system and qualified glass coated lens are configured with the most durable 16mm diameter metal housing tube. it is working well with highly stable and reliable dot alignment within long lasting time of 8 to 10 hours per day. On condition that it makes correct use of output power and easy adjustment of both laser beam focus and dot emitting direction, not effected by high height and long distance, it makes sure of low price, high stability dot measurement for both industrial and high tech work fields perfectly.
https://www.berlinlasers.com/445nm-blue-laser-diode-module
https://www.berlinlasers.com/high-power-445nm-150mw-500mw-blue-laser-diode-module