Worthen, William Ezra, 1819-1897, [from old catalog] ed · New York, Appleton · leaf 226
Fig. 410. Fig. 411. barometric pressure, usually 14*7 pounds. Draw the 0 line parallel to the atmosphericline, the clearance line perpendicular to it, a line parallel to the 0 line, at the height ofthe initial pressure, and a line parallel to the clearance line at the point of cut-off on theinitial…
Mechanical drawing
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