Initially when I looked at this tool, I thought that it was a bit pricey for a digital protractor. Now I find myself using this tool for framing, trim work, and saw alignment. It has been invaluable in checking miter gauges for accuracy, you could use a protractor or speed square, but this is more accurate than a speed square and much quicker than either, especially if you need to make adjustments. This tool impressed me when I was checking alignment on my sliding compound miter saw. I wanted to verify its accuracy out of the box so I dialed into 90 / 0 degrees, the BOSCH protractor read 90.3, flipped it over and measured the other side of the blade and it read 89.7. Definitley much quicker than the conventional way, and you can easily use this with the table saw. Typically over time ( about 5 months now ) this tool reads between 0.0 and 0.1 accuracy, and like most scales you can check its accuracy and know what your margin of accuracy is. The back spring angle feature is very handy for crown molding, and for checking corners the back edge is rounded so as not to foil your reading in an inside corner measurement. This tool does so much more than I have mentioned, these are just tasks that I have used repeatedly and successfully. A carrying case would be nice, as this unit is nicely machined, it has a level built in which is handy and for quick checks, it saves holding two tools. So far, I am very satisfied with this tool.