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...

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...