Author: Ryder, Harold & Vincent, H R
Title: The Steel Aquare - Its Use And Mechanism
Description: Caxton Publishing Co, nd c 1920, reprint. Pamphlet, G. 63pp, b/w illustrations, covers grubby, but a nice clean copy internally. Paperback , no dustjacket. ¶ The use of the steel square in setting out rooves & rafters.

Keywords: building, set square, carpentry