The fact is most things are only as accurate as the care taken in setup. Some of the laser setups are better than others. I had a tripod and a 75' long shop to setup and test the laser level. I moved the setup and the system I have repeated within 1/32" at about 70' using a plumb bob to a spot on the floor for height, but tilting the laser base visibly in two directions. Pretty good repeatability. (hell I was probably the cause of any measurable difference)! The seller claims 1/8" or better at 100' and it seems an honest claim. As with any tool, operator error can skew accuracy. And all of the normal disclaimers, YMMV etc...

Bill Jepson