Worthen, William Ezra, 1819-1897, [from old catalog] ed · New York, Appleton · leaf 472
Fig. 1071. is full size. Fig. 1072. Fig. 1073 is a plan and elevation of the strap for the upper part of heel-post.Extracts from lock specifications ( New York State Canals, 1854) : Locks to be composed of hydraulic stone masonry, placed on a foundation of ber and plank. The chamber to be 18level,…
Mechanical drawing
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