Cyclopedia of architecture, carpentry, and building; a general reference work .. (1912)
American School (Lansing, Ill.) · Chicago, American school of correspondence · leaf 418
ne-half of 72, or 36degrees, and intersects the blade at 8||, as shown in Fig. 5.By squaring up from 6 on the tongue, intersectingthe degree line at a, thecenter a is determinedeither for the inscribedor the circumscribed di-ameter, the radii beinga I and a c, respec-tively» The length of thesides… … 344 THE STEEL SQUARE 201112 7 Si
Architecture · Building
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