I find this device is both comprehensive and easy of use. Generally well designed and efficient. It is controlled by the touch screen with a fairly intuitive interface, even if not natteint lergonomie of a smartphone (eg: you go from one page to another by an icon and not by a swipe of the finger). So a few minutes are enough for successful first measurements with an accuracy of + / 2 mm (more than sufficient for my needs) and up to a distance of 50 m. The unit is very handy, light. The measurements are easy. The area calculation and volume are integrated. This is practical: it avoids juggle the rangefinder and the calculator. This rangefinder also permits dangle measurement (eg slope of a stairway)! And so indirect distance measurements (useful to measure the distance to the ground when a loose passage is smoothly advanced laser on a point above the wall cabinet and the device made the correction as it simultaneously measures the angle tilt potential). It can store several measurements and add them (or subtract), in the case of extensions to pieces. Finally, it allows the connection with a PC application, tablet or smartphone, to replace all of these measures on a plane or on photos. This is relatively heavy (create a project to create a plan -) but the result is up when you see the ribs on his photos. Please note the name on lappli lAppstore is "PLR Measure & Go" that not nindique record. The negatives are few. I regret the lack of a true on / off button: as soon as the device disables quon touches the central button (very sensitive) and goes out automatically after 5 mins quau dinactivité. And jaurais preferred a battery with 3 batteries 1.5 V (dailleurs why not 3 and 4?). The cover provided (this is the least we saw the price!) Is functional if not pretty BE. But overall this is a device that I recommend.
