The Viper laser line throw line works well for my purposes. I'm casting the throw line onto carpet and it is very visible. Hardware is included to mount either to a cabinet or the wall. I felt the included cabinet mount screws were a bit short for the need and would have made it difficult to feel that it was secure. Wall mount includes 2 wall anchor mollies which in my experience with the design isn't the best. I used 2 of my own mollies and securely mounted this to my wall.
Does what you need it to do.
Adjusting the projector is a little tricky as once you think you have it; the torque of the lockdown screws will throw you off a bit (pun intended). Patience will get you there, just slowly work the lockdown screws rotating sides with gentle turns.