Ready to hang cabinets and I dug out this laser level (not). Spent quite a few hours trying to figure it out. I mounted it on a tripod and leveled it with the built in levels. Useless, the horizontal line is still 5 degrees out. So I ignored it and measured on the walls with a pencil a few marks and tried to line up the lasor on the marks and checked with my 3 ft level. After all that I thought what good is this thing I could have just made a line with my pencil when I used my regular level to check the lasor line? I dont know if there is a way to adjust calibrate the unit, you can make a vertical line or horizontal by turning a thumb knob from stop to stop but its nowhere near accurate, hate to throw it away but I wouldn't even give to someone like this. Is there something I'm missing, does this thing have any use hanging cabinets?