Cyclopedia of architecture, carpentry, and building : a general reference work ... (1907)
American School of Correspondence · Chicago : American Technical Society · leaf 171
133 42 MECHANICAL DRAWING … In Fig. 52 a i)rism is represented standing on its base, so thatthe projection of the cube diagonal on the base (that is, a T-squaroline) is used to determine the light and dark faces as shown The prism in Fig. 53 has forits base a traiK^zium. TheXjrojection of the ray of lighton this end is…
Architecture · Building · Carpentry
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