【Durable protractor】 Stainless steel digital angle, laser engraved measurements provide clear reading. 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 the data and the inverted measurement value】 You can save the data during the 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】 The stainless steel edge is sharp. Be careful when using it and keep it out of reach of children Material: stainless steel + total length: 400mm + measuring range: 0 ~ 360 ° Resolution: 0.05 ° + precision: 0.3 ° + battery: 1 * CR2032 3V lithium battery (included) Package Contents: 1 * Digital Angle Finder + 1 * User Manual GREAT LOCKING FEATURE: The tight / loose knob works well and you can adjust it to the tightness that suits your use Zeroing button: simple and intuitive, using positive and negative angles Engraved measure: The engraved measure provides a clear reading for life