"4 Requirements" for Part Drawing Dimensioning, "5 Rules", 40 pages of PPT

The size on the part drawing is an important basis for processing and inspecting parts, is one of the important contents of the part drawing, and is the most commanding part of the drawing.

To mark the size on the part drawing, it is necessary to achieve the "4 requirements": correct, complete, clear and reasonable.

The "5 rules" of dimensioning: the size value is the real size of the part, in millimeters, the size noted in the figure is the size of the part after completion, each size is generally only marked once, and the size configuration is reasonable.