<p>Can anyone recommend me a good text that explains how to do technical drawings by hand? My professor does not use a textbook, and while I am absent, I would prefer to have some way to learn the material myself.</p>
<p>The text should explain how to do orthographic projections and explain the notations in the drawings as well as the meaning of different line types as well as auxiliary and section views. </p>
<p>I urgently ask all engineers/architects for help on this matter. Thanks!</p>
<p>NP</p>