Cyclopedia of architecture, carpentry, and building; a general reference work .. (1912)
American School (Lansing, Ill.) · Chicago, American school of correspondence · leaf 379
ld be similar to Fig. 90. To find the correct angle for the tangents of the face-mould,draw the line m from d, square to the inclined line of the tangentsc d; revolve the bottom inclined tangent c to cut line m in n, wherethe joint is shown fixed; and from this point draw the line c to w.… … Fig. JointFinding Angle between Tangents. 311 48 STAIR-BUILDING
Architecture · Building
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