Basically, the device works quite well and can be used well in practice. Especially for floor / ceiling measurements is a unit superior to a tape far. For a tape measure or ruler is always better if you want to measure, for example, something that does not end at / with a wall (for example, the width of a cabinet, the center of the room. Then, you need a sense resistor at the cabinet end, because the laser yes else measures up to the nearest wall), but it is indeed in the nature of things. Great it is natural that the device is so compact. Needs improvement I find quite wobbly on / off switch, which locks not once, but very simple without feedback ("click") back and can be shuffled. This is particularly unfavorable when the device unpacks somewhere (eg pocket), while the switch is actuated unintentionally. And instead of completely oversized Aufbewahrungsblechbox the pennies production would ensure better spent if the device a small storage pouch would instead settled. So you shall keep the thing either platzverschwenderisch in the big box, or you throw the thing you unprotected in a toolbox, where safely soon scratched the laser optics. Or one takes on the tough search for a corresponding pocket, you first have to find somewhere.
