The Carpenters' Steel Square, and Its Uses. Being a Description of the Square, and Its Uses in Obtaining the Lengths and Bevels of All Kinds of Rafters, Hips, Groins, Braces, Brackets, Purlings, Collar-beams, and Jack-rafters
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The Carpenters' Steel Square, and Its Uses. Being a Description of the Square, and Its Uses in Obtaining the Lengths and Bevels of All Kinds of Rafters, Hips, Groins, Braces, Brackets, Purlings, Collar-beams, and Jack-rafters