Cyclopedia of architecture, carpentry, and building : a general reference work ... (1907)
American School of Correspondence · Chicago : American Technical Society · leaf 418
of 72, or 36degrees, and intersects the blade at 8f |, as shown in Fig. 5. By squaring up from G on the tongue, intersectingthe degree line at a, thecenter a is determinedeither for the inscribedor the circumscribed di-ameter, the radii beinga h and a c, respec-tively. The length of thesides will… … 344 THE STEEL SQUARE 5 The figures to use for other polygons are as follows: Triangle Square Hexagon Nonagon Decason 20i|12 7 4.1 ^8
Architecture · Building · Carpentry
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