1. The symbol of surface roughness is a line segment with an included angle of 60. In the process of drawing, you need to draw a horizontal line segment at will, and then draw the diagonal lines of 60 and 120 from the midpoint of the line segment, and move the horizontal line segment up by 5 and 1 1 respectively.
2. Trim and delete redundant lines, and the final result should be as shown in the right half of the figure.
3. Click Drawing-Block-Define the attribute and configure the location of the specified attribute. Thus, a standard roughness symbol is drawn.
It should be noted that when drawing roughness symbols, they need to be drawn according to standards to ensure the accuracy and standardization of symbols.