Worthen, William Ezra, 1819-1897, [from old catalog] ed · New York, Appleton · leaf 200
Fig. 345. Fig. 346. … inches, and put up in boxes containing about fiftysquare feet. It is classed as single-thick (bout -^^inch) and double-thick (^ inch). When the squaresare large, or used for sky-lights, they should be the Fig. 347. latter. Plate-glass—polished plate is used for win-dows of stores and first-class…
Mechanical drawing
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