Louis Hertz aims ""to bring together all that the hobbyist needs to know to understand the framework of his chosen hobby and to be able to function."" To that end he describes the paths open to him, the types of equipment and components available and how to make use of them, the customs, standards and nomenclature of the hobby. The coverage is as complete as possible without becoming sidetracked; the book is to be both a useful permanent reference, a source of new and stimulating ideas, and a history of the hobby. (The publishers state that this offers for the first time a comprehensive history of model aircraft, illustrated with rare photographs and old prints.) How models work, how to select them, how to build them; engines of all types including jet and rocket; how to fly radio-control planes, control-line models, free-flight models--all are covered.