【Multifunctions】: Ruler and protractor combination for easy measuring inside and outside angles with LCD digital display, and it is easy to read. 【Durable Rulers】: Well-made stainless steel rulers and laser etched measurements offer clear reading and years' usage. 【High Accuracy】: Accuracy of this protractor is 0.3 degree. It is a good choice for most industrial projects like woodworking, crown molding and daily use. Folded length: about 7.5 inch/220mm. Total length: 400mm. 【Locking Function】: Easy to operate since this angle finder can be locked at any angle. 【Measuring Range】: It covers a wide range of angles up to 360 degrees, allowing for comprehensive measurements., Manufacturer: GemRed