Senior Course in Mechanical Drawing

Excerpt from Senior Course in Mechanical Drawing: Comprising a Complete System of Working Drawings The Plates in this Course are drawn with the same conventional lines as in the preceding ones that is, the full lines and short dots represent lines of the object being drawn and are to be inked black, the long dots represent centre-lines and important bases and lines of reference and are to be inked blue, and the long-and-short dots represent construction lines used in obtaining the lines of the object, the preservation of which is desirable, and are to be inked red. All dimensions lines are red. All red and blue lines are to be full, not dotted. If, however, a tracing of the drawing is required for the purpose of obtaining Blue Prints, the lines should all be black and be distinguished as in the Plates. 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.