1,The Simplest Measurement Method: This angle ruler is a measuring and layout tool, which can save your time, money and energy. The angle ruler is the simplest way to measure irregular shapes.2,Easy to Use: The angle plastic protractor adopts a unique tightening design and can be easily operated by one hand. The protractor is suitable for measuring all angles and shapes.3,Accuracy: This is a professional angle protractor, which is very suitable for accurate angle measurement and makes you more accurate when making and measuring objects.4,Adjustable Design: The angle ruler has a 4 sided ruler mechanism, which can slide and lock to any required angle. As a reusable template, the protractor will bring greater convenience to your manual production.5,Wide Applicability: This angle ruler can be applied to many scenes, such as carpentry measurement, angle measurement, DIY gift, etc, which has practical value. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.