Bin satisfied so far. The unit is ideal for all own measurements to approximately 15Meter. Especially in places where the ruler is no longer sufficient. Did it used mainly to the ceiling structure (UD, CD profiles) to create, the device has thereby saved me some time. The accuracy of the instrument is am satisfied so far.
Only Ster real lack is the on-off switch (pushing member), if there little dirt gets in the way, then it is hardly possible to use this. But not so tragic, the device switches itself off automatically after 1-2min-. If you press again it is online again. Therefore, it is OK so far.