Collins, A. Frederick (Archie Frederick), 1869- · Boston, Small, Maynard and company · leaf 166
^ w^i4 *# <Vt* to … ISI i£2 The Boys* Book of Engine-Building inch apart from their centers on the left handside and have the lower one as close to the crownsheet as possible. Put a piece of threaded pipe,% inch long, through each hole and screw a nuton both ends of each pipe tight against the sheet. For the steam…
Steam-engines
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