A fascinating compendium of early-twentieth-century mechanical devices, this wide-ranging work covers a variety of applications. More than 1,800 engravings ? ranging from simple diagrams to detailed cross-sections ? illustrate the workings of each item, from simple hooks and levers to complex machinery used in steam, motive, hydraulic, air, and electric power, navigation, gearing, clocks, mining, construction, and more. Compiled as a ready reference for inventors, students of mechanics, artisans, and other workers, this volume features only minimal text. Its true value lies in its wealth of illustrated information, offering the quickest and most satisfactory method of conveying the exact conditions of mechanical action and construction.