This is addressed to the hobby people or home builder. Am about to build a house and have already completed the shell, now the discussion is going on how many square meters are actually present and where should that be placed, etc. have therefore bought this device. Since I run with that thing everywhere and the measure thus is super easy, like I take the function with the continuous measurement, so I can stand myself or objects in the corresponding distance and fairs that is unique, so you can the room is set up very quickly and spatially represent anything. The square measurement and volume measurement are super easy to handle and 1 2 3 sized everything. Had the thing must have been previously until I unpacked the ruler I'm done with the measurement! No Joke. So all that has been said here is true !. For the price you do absolutely nothing wrong. It is also in dark rooms or at dusk illuminated display an absolute necessary must because, the "green" competitor not hold against, also the tolerance is (Messgenauigkeiz), after a test run in the competition, not so exactly like this one. In addition, you can also have a possibility to measure the device itself in sensitive measurements, so 5sec. Reverse piepend and measurement without Wacker - done. 100% recommendation to buy, service as usual on Amazone, tip.