Excerpt from Elementary Mechanical Drawing: Theory and Practice Mechanical drawing is the art Of exact drawing by means Of drawing instruments Of precision. It differs from free-hand draw ing because it uses instruments and in general aims to reproduce the Object not as it appears to the eye in perspective but in its absolute relations in space. Mechanical Drawing is a generic title; specialized branches Of mechanical drawing are known as architectural drawing, topographical drawing, machine design, etc. The elements which ...
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Excerpt from Elementary Mechanical Drawing: Theory and Practice Mechanical drawing is the art Of exact drawing by means Of drawing instruments Of precision. It differs from free-hand draw ing because it uses instruments and in general aims to reproduce the Object not as it appears to the eye in perspective but in its absolute relations in space. Mechanical Drawing is a generic title; specialized branches Of mechanical drawing are known as architectural drawing, topographical drawing, machine design, etc. The elements which underlie or are involved in the art Of mechanical drawing are: First, The Theory Of Projection; Second, Geometrical Drawing, and Third, Mathematics. The principles Of projection are involved, since we aim to transfer Objects having three dimensions to one plane Of two dimensions (the drawing paper). The difficulty which usually attends the study Of projection will be greatly lessened if a good method Of instruction is followed. It is better, for instance, to begin with simple Objects, than with complex ones. It is better to study minutely each separate detail, rather than several parts at once; studies Of unit details can then be built up to cover the whole Of a complex Object. The student, moreover, Should not be content with one study Of the Object but should make several studies Of the same Object in different positions. He should early acquire the habit Of analyzing, from the draftsman's point Of view, every Object into its parts and details. This power Of analysis once acquired saves time, ensures correctness, and is the secret Of power in the handling Of difficult and unusual problems. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at ... 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.
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