The beginning is difficult because despite the notice, I had trouble understanding the mode of operation. I find that dailleurs record is not always clear but hey its a personal opinion ... Once past this cap, I was able to take measurements of lengths and wall heights because we are conducting paint quotes in preparation for our work and this tool has helped. Once we have set the device and understand its operation, this device is a great help. But be careful when you take action to obstacles in the room (furniture etc ..) / It is imperative that the laser beam does not encounter obstacles between point A and point B. Obviously, we must be careful with this unit since the beam is dangerous to eyes. Anyway once you know, there are no worries. The case is plastic but it certainly has a sense of something sturdy and good grip. This device is not very big and it is a real plus as easy to carry everywhere. So despite an unclear instructions, I still wanted to put 5 stars because for me this camera exudes quality and is very useful !!! I advice you really !!!
