Excerpt from How to Make Patent Drawings: A Brief Treatise on Patent Drafting for the Use of Students, Draftsmen and Inventors I. Instruments and Materials. II. Use of Instruments. III. Penciling the Drawing. IV. Inking the Drawing. V. Sections and Section Lining. VI. Outline Shading. VII. Surface Shading. VIII. Lettering the Drawing. IX. Sketching. 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.