Good value but flawed. Ok for DIY. Professionals can buy better.
Seems accurate enough. Nice and bright lines, having horiz'l and vert'l lines plus plumb spots above and below is really useful. Negative comments are: it has to be locked to turn the lasers off, so that means a fairly robust switch on the side has to be slid over. This results in a high risk of moving the instrument position. While the lines and spots are very clear, they are also a bit thick so you have to aim for the centre of the line when marking out. There doesn't seem to be any drop protection built into the casing. Tri-pod is very poor quality and next to useless...not stable. Carry bag is top heavy, awkward to use and doesn't give much protection in transit. A hard case would make a big difference.