Colebar also has a ruler down the side — only available in inches, because America. It can lock to any number of positions, which it measures in degrees so you can use it as an angle and square for measuring. The only real downside is that it doesn't come with a wall to knock down.
Ethan Wolff-Mann is the Gear editor of Supercompressor. If he had a hammer, he'd hammer in the morning, evening, all over this land. Follow him on Twitter @ewolffmann