The CARPENTERS' STEEL SQUARE, & Its Uses. Being a description of the square, & its uses in obtaining the lengths & bevels of all kinds of rafters, hips, groins, braces, brackets, purlins, collar beams, & jack-rafters; its application in obtaining the bevels & cuts for hoppers, spring mouldings, octagons, stairs, diminished stiles, &c. Third edition, revised & greatly enlarged. (Bracket Hopper)