Excerpt from Modern Sheet-Metal Workers' Instructor: Practical Geometry, Mensuration, Properties of Metals and Alloys, Sheet-Metal Working Machinery, Working Sheet Metal, Sheet Metal Workers' Tools, Seams or JointsThis book consists of useful information for Sheet Metal Workers in all branches of the industry, and contains practical rules for describing patterns for Sheet iron, Copper and Tin work. Practical Geometry and Mensuration. Properties of Metals. Tools and Ma chinery used in sheet-metal work. Seams or Joints. Soldering and Brazing. Manufacture of Tin Plate. Retinning and Galvanizing. Pipe Bending. Hardening and Tempering Tools. Micrometer Gauges. Tech nical Definitions. Useful Information and Tables, which will be found of untold value in connection with the subject matter in the book.About the PublisherForgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.comThis 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.