The carpenter's new guide : being a complete book of lines for carpentry and joinery. Treating fully on practical geometry, soffits, brick and plaster groins, niches of every description, sky-lights, lines for roofs and domes; with ... designs for roofs, trussed girders, floors, domes, bridges, &c. ; staircases and hand-rails of various constructions; angle bars for shop fronts, &c. ; and raking mouldings; with many other things entirely new. The whole founded on true geometrical principles; the theory and practice well explained and fully exemplified on seventy-eight copper-plates, correctly engraved by the author; including some observations and calculations on the strength of timber. / By Peter Nicholson.