In the engineering profession within the most important documents are the levels of equipment. The design of any new device usually begins in the form of sketches or building plans a prototype or production. Originally done in pencil and ink, were gradually replaced by computerized CAD tools.
Despite the major modernization no longer useful to know the basics of drawing that can be found in old books. In google books free books are about as follows, by Thomas French.
A Manual of Engineering Drawing
Mechanical Drawing for High Schools
newer version of the first manual are still protected by copyright.
For more files, links, photos and stuff engineering chemistry, nanotechnology, etc. Click Here
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