I used this to align my car. It worked well. The directions were sparse, but there are many great online videos. If you search donut alignment, they use a tool similar to this. The quality of the tape measures was good, both metric and English measurements. The quality of the digital protractor was also good. It was easy to use, is rechargeable, and is accurate to .02 degrees. I'll probably use the protractor for other projects around the house. The metal plates are well built, and the standoffs were easy to install and adjust. It all fits nicely back into the box for storage and doesn't take up too much room. The first time using it took a while to figure it out but using it in the future will be much faster. This was also less expensive than other brands, and from what I can tell it works equally as well. It pays for itself after 2 alignments.