Twentieth century handbook for steam engineers and electricians, with questions and answers; a practical nontechnical treatise .. (1916)
Swingle, Calvin F. (Calvin Franklin), b. 1846 · Chicago, F.J. Drake & company · leaf 560
VERAGER OR PLANIMETER of late years become an almost indispensable adjunct of theindicator. It shows at once the area of the diagram insquare inches and decimal fractions of a square inch, and Diagram Analysis 547 when the area is thus known it is an easy matter to obtainthe average height by… … Fig. 221 plying the height by the scale. Or the process may be madestill more simple by first multiplying the area, as shownby the planimeter in square inches and decimals of an inch,by the scale, and dividing the product by the length of thediagram in inches. The result will be the same as…
