Some digital protractors are actually two-in-one or three-in-one tools and can often include a ruler, a level or an angle finder. Overall, the best digital protractors are easy to learn, easy to ...

The Zigview S2 Digital Angle Finder is a detachable high-rez 2.5-inch viewfinder that clamps onto your digital SLR’s eyepiece, and you can either use it as a waist-level finder or take it off ...