Excerpt from Notes on Practical Mechanical Drawing Written for the Use of Students, in Engineering Courses This book is a collection of notes intended to furnish, the basis for a course in elementary mechanical drawing, so arranged, it is thought, that the teacher may have the widest latitude in his choice of sequence of subjects. Since its first edition, two years ago, the book has been rearranged with this particular point in view. It has been thoroughly revised and also enlarged by the addition of more explanatory matter and illustrations in orthographic projection, by a chapter upon isometric and oblique drawing, and by a number of exercises in working drawings from sketches. The usual geometrical drawing has been reduced to a minimum; it has been included, not for its value as exercise in drawing, but for the knowledge conveyed upon constructive processes useful in the science. Latest practice in teaching drawing shows the influence of utilitarianism. The aim of a mechanical drawing is to record useful facts; useful facts, therefore, are used as exercises from the beginning of the study. The theoretical or geometrical science forms but a very small part of the knowledge required in the subject and, where courses in drawing are necessarily short, the maximum of practical information is aimed at. The course here outlined uses working drawings as exercises almost from the very beginning. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.