Journal - Franklin Institute of the State of Pennsylvania (1826)
Franklin Institute, Philadelphia, Franklin Institute (Philadelphia, Pa.) · [Philadelphia : Franklin Institute] · leaf 103
I calculate to use a 16-pouud iron rail, most generally, in lengths of20 feet, the ends of which will meet on a post and will be receivedand supported there by a casting fixed on the post. The wires will be anchored at the start, and run over the bolts, topof the posts, the top wires will, while…
Science · Technology · Meteorology · Patents
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