I bought this tool primarily because it seems like a nice gadget to have to make sure my carcases and cabinets are square. But after getting it, I find myself using it for a new purpose all the time. As with all Bosch tools, the construction of this digital protractor is excellent. Checking the accuracy of the protractor with a few expensive engineering squares showed that the protractor is dead on. I think I can finally build that corner cupboard I have always wanted to. Perfect birthday or Christmas present for the woodworker in your life.