When I look at the price-performance, then this article is great. It measures on easy way. Whether the measurements are accurate to the millimeter, I can not tell, but for my measurements, it is enough perfectly. Four stars he gets just because I have a feeling that the laser is not aligned hundertrpozentig. If I recall exactly place the rangefinder against the wall, so the laser spot on the opposite wall is not exactly at the same level. When remeasuring whether the wall is perhaps wrong, the unconfirmed. So the laser does not seem to be exactly horizontal. It would be helpful here probably a built-in balance.
