Trying to get accurate angles has always been a challenge and a guesswork. With this tool I can snap it in after measuring and then use it to mark the part I'm trying to cut. I also like that the metal doesn't warp. My husband also added his two cents: I also used it in the shop for my welding projects. I've made several lightbar mounts for trucks and tractors, including trying to fine tune the corners of the roof or bumper so the lightbar mounts directly to the car. To this day, every mount I've made has been perfect because of this. The display is very clear and the buttons are very easy to use.