Appleton's dictionary of machines, mechanics, engine-work, and engineering (1869)
New York, Appleton · leaf 63
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 theBum of these to be divided by the number of points taken. Hence the actual power of the engine… … Jforins Indicator.—That eminent French mechanician, M. Arthur Morin, conceiving, with, reason, thatconsiderable inaccuracy was likely to result from the difficulty of constructing the spiral springs inMacnaughts indicator, so as at all parts of the stroke to denote equal pressures by equal…
Mechanical engineering
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