High technology is revamping the specialty of technical drafting, an ancient craft with methods that haven`t changed much since the invention of the T-square and compass. For 35-year-old draftsman ...
This media is in the public domain (free of copyright restrictions). You can copy, modify, and distribute this work without contacting the Smithsonian. For more information, visit the Smithsonian's ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results