Please note these books are the last one's in stock and have some water damage to the cover and inside pages. In nine chapters the author comprehensively covers general considerations and principles, efficiency, design features and scale effects. Materials and their properties, calculations for safe working pressures and general proportions are discussed. Chapters are also devoted to types of boilers, methods of constructions, flanging and forming plates, setting out, annealing and riveting. Then we have details of boiler mountings and fittings, safety valves, gauges, clack valves, regulators and all the other detail parts inherent to good boilers. Fuels and firing methods are discussed, as are test pressures, testing, superheaters, feedwater heaters and the like. Many useful tables are provided and a wide selection of detailed drawings covering every type of model boiler in use today. First published in 1967 and now reprinted.