Surprisingly efficient shtuk, in a toy performance. I could not imagine such a compact rangefinder, but this one also works. The measurement range is similar to the truth, he himself measured 37 meters with a trifle, but the texture of the surface to which the measurement is made is very important. Sometimes it is buggy, freezes on measurement, but it seems infrequently and on controversial surfaces, repeated measurement solves the problem. The error is, within the declared range. There is an adSee full review