Feature:1. Rugged and Durable: This triangular fixture goniometer is more durable and sturdy than other PVC plastic saw miter gauges because it is made of high-quality ABS. In addition, the miter saw gauge is scratch-resistant in daily use.2. Accurate Measurement: The accuracy of the protractor is plusmn;0.3 degrees. This is a good choice for most projects and daily use. Has an easy-to-read precision infrared engraving scale with clear scales. With flat level measurement, metric and inch length measurement, convenient to use.3. Elaborate Design: The internal O-ring mechanism can be rotated during operation to ensure that accurate readings can be obtained on both the internal and external corners, and to avoid wrong measurements during the bevel cutting process.4. 360 Protractor: This protractor is designed to help you measure the correct and precise bevel angle effortlessly. The protractor supports any angle measurement from 0 to 360 , which can provide you with the exact angle you need(inside or outside corners) , which is very practical.5. Easy to Use, Owing to the adjustable and collapsible design, not only is this miter saw angle finder easy to use, but also convenient to carry or store and feature a one-handed operation with a unique tightening mechanism Suitable for outdoor using, with engraved dial and two easy-to-read scales for easy using.Specifications:Name: Miter Saw ProtractorMaterial: High Quality Engineering plasticAngle: 360 Color: As pictures shownSize: app.190x70mm/7.48x2.76inPackaging includes:1* Miter Saw ProtractorNote:1. Please allow 1-2cm error due to manual measurement. pls make sure you do not mind before you bid.2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Please take the real one as standard, Thank you