Excerpt from Shop Mathematics: A Treatise on Applied Mathematics Dealing With Various Machine-Shop and Tool-Room Problems, and Containing Numerous Examples Illustrating Their Solution and the Practical Application of Useful Rules and FormulasMany of the more elementary subjects, such as addition, multiplication, division, etc., have been omitted, as prac tically all skilled men and most apprentices possess this rudi mentary knowledge. But, in view of the fact that calculating 3 not a regular part of the shop man's work and he is liable to become rusty even in some of the simpler branches of arithmetic, a few elementary subjects which often prove stumbling blocks have been included, such, for example, as the multiplication and division of common and decimal fractions, proportion, involution and evolution, and percentage.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.