What is the national standard for marking arrows, numbers and centers in CAD mechanical systems?

The national standard marked in CAD mechanical drawing is the national standard of mechanical drawing. The following is the dimension style set as the national standard in AUTOCAD. It also includes national standards for arrowheads and digital centers:

Setting of text style: In AutoCAD, priority should be given to *. SHX is a special font for AutoCAD, and TrueType font (TTF font) under Windows should be used less. The following picture shows the text style that conforms to the national standard.

1, create a new gb style, and set parameters such as dimension line and extension line on the "Line Arrow" card, as shown in the figure. ?

The offset of the starting point in the drawing is the standard of architectural drawing. If it is a mechanical drawing, you can use the default value unchanged.

2. Choose a large and small text style?

3. Consider marking the scale factor?

The scale factor DIMSCALE takes the reciprocal of the scale, for example, the drawing scale is 1: 50 and DIMSCALE = 50；; If the printing scale is 1: 100, then the size scale is = 100 ..., which is the case when printing in model space. If you use a layout, select "Scale dimensions by layout (paper space)" without specifying a value for DIMSCALE. ?

4. Can the unit be the default value?

5. After setting public * * * parameters, click OK to return to the previous dialog box to view the newly created gb style. ?