I have this drill for several years now. He is absolutely sufficient and stable enough in conjunction with a conventional drill for the 'normal' household. Recently, however, I noticed that one for precision work in which is really important to the millimeter, but slight deviations 1 - 2 millimeters has because the drill but simply allowed too much play.
Conclusion: If you want to drill for craftsmen times a vertical hole and can safely access. Who wants to drill precision holes, should rather resort to a full bench drill.