Appleton's dictionary of machines, mechanics, engine-work, and engineering : illustrated with four thousand engravings on wood ; in two volumes (1873)
D. Appleton and Company · New York : D. Appleton and Co. · leaf 61
as to form au almosphere line. A communication is then opened with the interior of the cylinui,r ol the engine by turning the cock C, and a figure or diagram is traced upon the shp of paper, exacuy representing the successive pressures of the steam above, and corresponding degrees of… … of equal parts, the perpendicular distances of the outline of the diagram above and below the atmosphere line at each of these points, to be carefully measured upon the scale of the instrument, and tli«sum of these to be divided by the number of points taken. Hence llie actual power of the engine…
Mechanical engineering · Mechanics · Engineering
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