ABC of the steel square and its uses

"ABC of the Steel Square and Its Uses" by Fred T. Hodgson is a practical guide focused on the tools and techniques used in carpentry and construction, likely written in the late 19th century. The book outlines the varieties and applications of the steel square, emphasizing its importance as an essential tool for various carpentry tasks and problem-solving in mechanical work. It serves both as a reference for seasoned professionals and a learning resource for young mechanics eager to hone their skills. The opening of the work introduces the structure of the text, which is divided into three main sections: Division A covers the different types of squares and their practical applications, Division B focuses on using the square for roof framing and calculating cuts for rafters, and Division C offers a series of questions and answers on practical issues encountered in construction. Hodgson discusses the significance of understanding the capabilities of the steel square in achieving accurate measurements and construction, emphasizing that knowledge and application in carpentry are key to becoming an accomplished mechanic. He prepares the reader to explore practical solutions through clear examples and detailed instructions, setting the stage for practical applications to follow in the subsequent divisions.