I have this set of three books by Harry Bryant Newbold F.R.I.B.A, called the Modern Caprenter and Joiner, with a special section on The Use of the Steel Square.
Introduction starts off.
Even in this era of the steel girder and the steel frame, we cannot afford to overlook the importance of timber in building work. Timber plays it's part in construction, both as a temporary means to an end, as in scaffolding, centerings, shutterings and casings of all kinds, and secondly as permanent building material for structural purposes as well as internal fittings.
They are amazing books that show everthing you would ever want to know 1920/30 style

printed arround the 30s I would guess, the covers are a bit tatty but if any of my chippy friends want a piece of history to look after it will cost you the postage.
psssst this is not a first come gets offer if more than one wants them I shall consider the merits