The Digital Angle Finder by AivaToba is an excellent tool. It made of Carbon fiber and ABS, with good rigidity, wear resistance, not easy to deform, will not scratch hands, and is light weight, which is easy to carry. It can measuring, marking and scoring lines, measures inside angle, outside angle and working as bevel protractor, adjusting angles of table saw, miter saw, band saw etc. It makes calculating angle and length a quick and accurate job. It is ideal for woodworking, construction, and machining and any DIY jobs where you need measurements.