Bests & Worsts Reviews from Amazon

It’s a pretty useful and handy tool because it’s all in one, but I bought this tool mostly for its laser function, which I would like to use it as a guideline for writing and drawing, but the line doesn’t have the right angle even I adjusted it as the manual said (see pictures). Also attached some other pictures of this product just for your references. After leaving the comments above, the 3rd party seller contacted me and sent me a new adjusted one for free, which is really good costumer service, so I added 2 stars for them.