【Durable Protractor】Stainless steel digital angle, laser-etched measurements provide clear reading. 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 and Reverse Measuring Value】You can save the 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 a ruler and a protractor You can measure lengths and angles for easy measurement 【Note】The stainless steel edge is sharp. Please be careful when using it and keep it out of reach of children