A treatise on handrailing : comprising three original systems of applying the trammel or string in drawing the face moulds of geometrical, elliptical, and spiral handrails ; also, an original system of applying the tips of the moulds to the edge of the plank ; an original system of cylindrical sections ; and an original theory of resting points ; attended with an introductory course of geometry, ratios and proportions ; exemplified by full and complete demonstrations ; and illustrated by twenty plates | Collections