Book excerpt: This guide to geometrical drawing, first published in 1876, provides clear instructions for drawing three dimensional objects, with practical application for high school students, engineering students, inventors, and artisans. The text includes numerous illustrations, examples, and exercises to reinforce understanding, making it an essential resource for anyone interested in the mechanics of drawing. This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work is in the "public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.