A part drawing is a drawing that expresses the shape, size, and characteristics of a single part. It is also a drawing used to manufacture and inspect machine parts. It is also called a part working drawing. In the production process, production preparation, processing, manufacturing and inspection are carried out according to the technical requirements of the parts drawings and drawings. Therefore, it is an important technical document to guide the production of parts. A complete part drawing should include a set of views, various dimensions, technical requirements (or technical conditions) and title bar.