FEATURES ACCURATE AND EASY TO MEASUREThis digital angle ruler has a measuring range of 0-360 with an accuracy of ±0.3. The large LCD display is easy to read. Multi-Function By tightening and loosening the knob, the digital angle protractor can measure angles and lengths (metric and imperial), allowing you to measure inside and outside in 360 degrees. [Hold Function and Auto Off] With a reset button to zero in at any angle for relative measurements. The hold button is used to hold the angle at any time, and the Angle Ruler Protractor will automatically switch off after 6 minutes of inactivity. Widely UsedThe digital protractor can be used as a carpenter's tool. It can be used for internal and external angle measurement, drawing marking, etc. in carpentry, construction, repair, teaching and other fields. Product Name: Digital Angle Ruler Product material: stainless steel Product size: 200mm Colour: Silver Packing list (available after purchasing one product) Angle ruler * 1 Please understand: 1.Due to the long shipping time, the item may be damaged during shipping. If the item is damaged, please leave us a message through the official website immediately and then post a comment, I will solve the problem for you. 2. Due to manual measurement, the size may have 1-3cm error. 3. Colour may vary by monitor.