【Durable Protractor】 The digital protractor made of stainless steel, laser-etched measurements provide clear reading. The digital LCD display is easy to read and eliminates guesswork. 【High Accuracy】 The accuracy of this angle finder is ±0.3 degrees. Measuring range: 0-360°, folded length: 8 inches/200 mm, total length: 15 inches/400 mm. 【Hold Data & Reverse Reading】 You can save data during measurement by pressing "HOLD / Rev."; the display can be reversed for easy reading by long pressing "HOLD / Rev." press 【Combination of 2 functions】Combination of ruler and protractor for easy measurement, you can measure lengths and angles 【Note】* The stainless steel edge is sharp. Be careful when using and keep away from children