The digital level doesn’t rely on the user to determine if a bubble is accurately between between two lines, and it has an audio alert when it achieves level or plumb. Highly accurate with a .01° accuracy. Other features include an automatic shut off after continual non-use, so it does not to waste battery power. If turned upside down, the screen will automatically adjust so you can read it without any problems. Using a digital level is common in the concrete industry where a high level of accuracy is a must, and where pitch is exact.