A practical treatise on modern gas and oil engines (1902)
Grover, Frederick · Manchester, The Technical Publishing Co., Limited; [etc., etc.] · leaf 180
The tracing point D, whenmoved down the inner edge of K, should then coincide withthe extremity of the diagram. The weight W is intendedto keep the instrument from lifting out of the slot when inuse. The recording wheel runs upon a piece of paperfastened to the board upon which the other parts… … Fig. 97. the diagram by moving in a clockwise direction, until return-ing to the point E. The area of the diagram may now be IVO VALTE SETTING. read off in square inches upon the wheel and its vernierscale. We, however, require the mean height of the diagram ;hence, if we move the pointer D upwards…
Internal combustion engines
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