Excerpt from Gages, Gaging and Inspection: A Comprehensive Treatise Covering the Limit System, Measuring Machines, and Measuring Tools and Gages for Originating and Comparing Measurements in the Manufacturing and Inspection Departments, Including Means for Measuring and Inspecting Screw Threads An The development of interchangeable manufacture has made necessary a complete revolution in the gaging and inspection systems employed in the mechanical industries. The intro duction of the limit system in manufacturing has changed many of the methods previously in vogue. The intensive manufacture of arms and ammunition during the past few years has also more than ever indicated the necessity of accurate and reliable means of gaging and inspection. N 0 book has been published in the past dealing exclusively with this subject, nor dealing compre hensively enough with it to meet the requirements at the present time, and for this reason the present volume has been prepared with a view to cover the principles and the practical application of the limit system of interchangeable manufacturing, and to describe the principal tools and gages that are employed in this work in leading manufacturing establishments in the country. 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.