First of all, one of the pictures shows a spirit level on a tripod. Well, there's no way to do it. Second, I was very surprised that you have to align the laser yourself! I spent about 15-20 minutes trying this and couldn't. First you need to find the right tool to turn the "knob". Then I didn't have a chance to set it properly. Turning around is not comfortable at all! Then you hardly rotate it and the laser comes out very different than before you rotated it. I gave up and had to go back. I think for the price it was too good to be true.
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