Any time users are trying to make highly clear dot alignment, not the same as a simple green laser pointer, it always makes even more efficient job with a high brightness beam emitting tool, such as a 532nm 10mW green laser diode module. It projects the most visible and the brightest green laser light from middle wavelength of 532nm green DPSS laser system.
In process of long lasting dot alignment within 8 to 10 hours, after leaving enough time and space for tube cooling down, it just makes sure of highly stable and no decay light dot measurement in long lasting use. This 16mm diameter metal housing tube made green dot laser enables easy installation, good direction and high precision dot measurement for multiple precise dot measuring works, including laser marking, laser engraving machine, drilling system, high tech work etc.
https://www.berlinlasers.com/532nm-green-dot-projecting-laser-alignment