Cyclopedia of architecture, carpentry, and building : a general reference work ... (1907)
American School of Correspondence · Chicago : American Technical Society · leaf 243
e of an intersectionbetween pipes having different diam-eters in boiler work is shown in Fig.13B. ^Vhile the method of obtainingthe j)atterns is similar in principle toparallel line developments, a slightchange is required in obtaining theallowance in the stretchout for the thickness of the metal… … Fig. 1.33.
Architecture · Building · Carpentry
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