Feature:_x000D_ _x000D_ The product is made of high carbon steel, which is not easy to rust and has a long service life. _x000D_ The scale is engraved by a precision machine. The figures are very clear and easy to read. _x000D_ The product is compact, portable and suitable for outdoor operation. _x000D_ The measuring precision of the product is very high. It can be precisely measured by fine-tuning and measuring range is 0-320 degrees. _x000D_ Products are widely used in woodworking, construction, mechanical processing and other industries. _x000D_ _x000D_ Specification:_x000D_ Material: High carbon steel_x000D_ Range: 0-320_x000D_ Application: Angle measuring_x000D_ _x000D_ Package list:_x000D_ 1 * Protractor_x000D_ _x000D_ Note:_x000D_ The actual product color may deviate from the photo due to light._x000D_ There may be a slight deviation in the measurement of product._x000D_ _x000D_ Use:_x000D_ The zero position of the universal angle ruler should be calibrated first. The zero position of the universal angle ruler is installed on both the angle ruler and the ruler. The bottom edge of the angle ruler and the base ruler have no gap contact with the ruler. At this time, the main ruler is aligned with the "0" line of the vernier._x000D_ After adjusting the zero position, any angle in the range of 0-320 degrees can be measured by changing the mutual position of base ruler, angle ruler and ruler.