High Precision: the precision of the protractor: 0.3; Repeatability: 0.05; Measuring range : 000.0-999.9; 200mm long steel measuring legs, you can measure 360 curvature while measuring length. Premium stainless steel. HOLD function and reverse measurement value: you can save the data during measurement using "HOLD / Rev. "press; the display can be reversed for easy reading by long press HOLD / Rev. Press. to make your cut. You save a lot of time and energy. Lock and Reset Button: The "Zero" button allows you to keep data exactly where you want it. Locking screws to lock both legs in the desired position or angle without worrying about the angle changes as you move the ruler. LCD Monitor: Digital protractor with large LCD display , more intuitive and more precise for reading data. Stable, reliable and precise. The display is nice and large and very easy to read no matter what degree position it is in. The protractor with lock button allows you to lock the angle in any position without worrying about the angle, changes when you move the ruler. Digital angle protractor with large screen - Screen stand function and 180 degree rotation - 400 mm. Premium quality electronic protractor for architects and craftsmen. The large screen has good contrast and the number can rotate 180 degrees, easy to read. The measurements therefore remain clearer and more understandable. The digital display is very sensitive and shows the exact degree even after small movements. Automatic on and off, automatic switching on by slider movement - Not adjustable, reset (zeroing) possible in any position. Specifications: Material: stainless steel. Battery: CR2032 3V lithium battery. Folded length: 200 mm. Extended length: 400 mm. Working range: 000.0-999.9 Angle accuracy: 0.3. Weight: 210 g. Dimensions: laser engraved. Contents: 1 protractor. Note: 1. Please replace the battery when the LCD screen no longer works. 2. Please clean the product regularly and do not use it near water. 3. Please be aware of sharp edges and corners to avoid injury.