Rudimentary treatise on the erection of dwelling-houses : illustrated by a perspective view, plans, elevations, and sections of a pair of semi-detached villas ... (1896)
Brooks, S. H. (Samuel H.) · London : C. Lockwood and Son · leaf 105
8] PROPORTIONAL COMPASSES. length of any line be taken between the opening of the two former points^ the interval between the two latter points will be exactly one-half the length of … its owner in saving both time and trouble. The pro- portional compasses consist of two equal and similarly formed parts or limbs, a e and b d (see the accompany- ing engraving), which are represented as opening upon a centre c, and forming a double pair of compasses or points, A B, E D. When shut…
House construction
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
