Worthen, William Ezra, 1819-1897, [from old catalog] ed · New York, Appleton · leaf 417
Fig. 937. … Fig. 938. Fig. 939. Figs. 940, 941, and 942 are steam-pipe joints, as used at the works of theNarragansett Electric Lighting Company, where it is essential to maintain the
Mechanical drawing
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