A nice convenient and fast but expensive tool.

Material received in its original packaging Bosch, the doc is huge and heavy, so the box weighs one tone, even without rangefinder.
I tested the unit, the following emerges: below 1m measured, the unit 3mm announcement of more systematically.
Example, a door width 75 mm Actual: 78 mm indicated, same with measured 50 cm, 3 mm more.
No worries, I will use my measuring tape for small steps, which is faster and more ... lol
Above the 1 m, it is just in mm is bluffing.
But be careful to targeted areas for measurement and positioning.
The handling is operational when the lazer remains dangerous for the uninitiated, be careful the eyes of your neighbors & relatives (humans and animals).
I tested pythagore single tripod photo, I am not satisfied with the result, an error of more than 10cm, but it was my first use of the function. I will instead turn towards the dual function pythagore, looking perpendicular then the 2 ends to give length.
For accuracy, it complies +/- 1mm, I repeat the same steps and always the same values.
I tested aiming, without a tripod, I made a measurement 25,45 and 90 m in daylight, it's fast and it works well.
I have not checked if the measure was just for these distances. I would do that soon.
In summary, to the plans of rooms, you can be assured that everything will be measured will be within +/- 3mm +/- 1 mm even if we do small measures tape measure.