If dot measuring work is processing at various work distances, it is making good job with a 515nm green dot laser alignment. Available with wide range output power of 5mW to 50mW, after correct use of 5V, 9V 1000mA DC power supply, it keeps work with highly visible green laser beam at several miles far away, but also projecting highly clear green reference dot for both close and long distance. Only after its proper adjustment of both laser beam focus and dot emitting direction, not relying on any manual labor force input, this 515nm green laser module makes sure of low price and good direction dot alignment for all application fields constantly.
https://www.berlinlasers.com/515nm-forest-green-dot-laser-alignment

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