Durable Protractor ： Stainless steel digital angle, laser engraved measurements provide clear reading. The digital LCD display is easy to read and prevents guesswork High precision ： The precision of this angle finder is ± 0.3 degree. Measuring range: 0-360 °, folded length: 8 inch / 200 mm, total length: 15 inch / 400 mm Keep data and inverted measurement value ： You can save the data during measurement by pressing "HOLD / Rev."; The display can be inverted for easy reading by long pressing "HOLD / Rev." press Combination of 2 functions ： Combination of ruler and protractor You can measure lengths and angles for easy measurement Note ： Stainless steel edge is sharp. Be careful when using it and keep it out of the reach of children Material: stainless steel + total length: 400 mm + measuring range: 0 ~ 360 ° Resolution: 0.05 ° + precision: 0.3 ° + battery: 1 * CR2032 3V lithium battery (included) Package contents: 1 * AivaToba Digital Angle Finder + 1 * User Manual Great locking feature: the tight / loose button works well and you can set it to the tightness that suits your use Reset button zero: simple and intuitive, using positive and negative angles Engraved measurement: engraved measurement provides a clear reading for life Quantity: 1 piece Note: this does not include other things, the color is based on the first picture, and other pictures only show the effect Due to the differences between different monitors, the picture may not reflect the actual color of the item. Due to manual measurement. Please allow deviation. Thank you!