Dot laser alignment gets very similar type laser beam and light spot emitting as a laser pointer. However, it just gets totally different applications, not only workable for formal presentation, mainly focusing on clear and accurate dot alignment and collimation in various industrial machinery processing works. This dot laser is being used as an accessory part, getting wide applications in garment button positioning, laser marking machine, laser engraving machine, military targeting, laser measurement tools, single device, laser medical treatment etc.