This angle measurement protractor can be applied for home and office using, school students and teachers. It is very convenient to use, and it is good for completing your work, and a great present idea for kids. Besides, it’s also an essential tool for any toolbox. The black numbers are clear and easy to identify, then you can read quickly with great accuracy. Feature - ColorSilver - Material: Stainless Steel. - Size: Approx. 28x7.5x0.1cm. - Made of stainless steel material, it is not easy to rust, smooth edge, fine grinding, accurate measurement. - Measuring length: 150mm, 0-180 degrees rotation, any measurement. - Precision digital scale ruler, the scale is accurate and the reading numbers are clear. - Swing Arm Protractor read centimeter and read Angle marker, then adjust the nut, you can fix the angle. - Suitable for engineering, angle measurement, student drawing, architectural design, carpentry, length measurement. Package list: 1 x Stainless Steel 180 Degree Protractor