LEIGAO The digital goniometer accurately determines the angle of any angle and easily determines the angle of any angle.This digital protractor tool is especially suitable for crown molding and floor applications to ensure you get a perfect cut every timeEasily send the internal and external angle measurements to your smartphone with one click, and use the app to quickly calculate the composite angleUsing the app, you can also quickly and easily determine the materials and tools needed to complete the projectThis next-generation miter finder and angle measurement horizontal and vertical bubble levelPackage Includes:1*Digital Display Square Woodworking Measuring RulerSpecifications:Material:Plastic + Stainless SteelColor :BlackSize: Approx.17cm/6.69inchnote:1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order.2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.