【Professional Protractor】The protractor has passed our rigorous testing to ensure more precise accuracy. The accuracy of the protractor is ±0.2° and the measuring range is 0-360°. Protractor folded length: 200mm/7.9in, total length: 400mm/15.7in. 【Two-in-one function】The two-in-one combination of ruler and digital angle protractor can measure length and angle. It is very suitable for woodworking processing, architectural decoration, mechanical processing, architectural drawing, DIY at home, school teaching utensils. 【Button Function】 ON/OFF/ZERO buttons (long press the OFF button to turn off), data lock HOLD button (after locking, there is no need to worry about data deviation), D/M button. 【Lightweight and Portable】 Compared with the stainless steel protractor, this measuring protractor is lighter and safer. The stable locking rotator can lock any angle of the protractor. 【Large LCD Display】 The angle ruler is equipped with With a large LCD screen, you can easily read the data and it