This shall be German workmanship?

The idea with the line indication by laser is actually quite good, but in practice it does not work as implemented here. The laser beam must in fact be aligned manually (!!!), which is a game of patience. After all, the alignment must be made by means of two set screws and the tightening of the same as the beam moved repeatedly. So if you want to make really precise cutting, with this solution is poorly served.

To make matters worse, that the laser beam is adjusted with time, so you must repeat the alignment constantly. In addition, the beam loses downward luminosity, so that one hardly sees something in a normally lit office. One is thus forced to the material being cut is always to create the top, but you can see not whether it is just at the bottom.

Conclusion: The mechanical processing is fine, but the laser module is simply scrap.