Twentieth century hand-book for steam engineers and electricians with questions and answers; a practical non-technical treatise .. (1913)
Swingle, Calvin Franklin, 1846- [from old catalog] · 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 tliediagram in inches. The result will be the same as…
