Originally written for use in U.S. Naval Training Schools, "Basic Machines", by the Department of the Navy, is the comprehensive textbook on everything from basic machines to complicated engines and hydraulic systems. Beginning with basic machine theory, the text explains how simple systems such as the lever, inclined plane, and pulleys work, then moves on to more complicated machines, such as screws and wedges, and concludes with an explanation of internal combustion engines, hydrostatic, and hydraulic machines. In addition to a description of how each of these machines work, this classic textbook also describes how to measure the friction and efficiency of a system, how different gauges and barometers function, and how power, force, and pressure affect machines. Well organized and clearly presented, the concepts governing machine design are explained from their most basic theories all the way through to their specific applications and specifications. "Basic Machines" is a useful introduction to all types of machines for any student of mechanical engineering and is a helpful resource for those who wish to have a better understand of the machines that we all rely on in our daily lives. This edition is printed on premium acid-free paper.