Cyclopedia of architecture, carpentry, and building : a general reference work (1912)
American Technical Society · Chicago : American Technical Society · leaf 421
343 THE STEEL SQUARE … Fig. 5. Use of Steel Square to Find Miter and Side ofPentagon. inches wide. Tofind the contents,look under 12, andfind 14; then fol-low this space alongto the cross-line un-der 9, the width ofthe board; and hereis found 10 feet 6inches, denotingthe contents of aboard 14 feet longand 9 inches…
Architecture · Building
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