Cyclopedia of architecture, carpentry, and building : a general reference work ... (1907)
American School of Correspondence · Chicago : American Technical Society · leaf 183
Fig. 71. Fig. 72. to it must be determined by co-ordinates, as in isometric. It willbe seen at once that this system possesses some advantages overthe isometric, as, for instance, in the representation of circles,
Architecture · Building · Carpentry
Internet Archive · Public Domain Mark 1.0. Free to use for anything.
