Cyclopedia of architecture, carpentry, and building : a general reference work ... (1907)
American School of Correspondence · Chicago : American Technical Society · leaf 280
Fig. 173 •Win have no difficulty in laying out any patterns no matter what thepitci) ot the skylight may be, or what angle its plan may have First draw any center hne as A B, at right angles to which lav offC 4, equa! to 12 inches. Assuming that the light is to have one-third
Architecture · Building · Carpentry
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