Excerpt from Mechanical Drawing: Elementary and Advanced A mechanical drawing is used to convey precise information from one person to another. A patternmaker must have a true drawing of an object, giving correct dimensions and instructions before he can make a pattern, from which the foundryman can make a rough casting. The machinist must have a drawing from which he can obtain accurate information to enable him to take the rough casting and by slotting, planing, drilling, grinding, chipping or turning he can produce the finished article as designed by the draftsman. 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.