Goldingham, Arthur Hugh. [from old catalog] · New York, Spon & Chamberlain; [etc., etc.] · leaf 157
Lost motion inthe indicator may show peculiarities in the diagramwhich to an inexperienced manipulator may be thecause of trouble. Tachometers (Fig. 44).—These instruments havebeen designed for the purpose of ascertaining at a 84 OIL ENGINES. glance the number of revolutions made in a given timeby… … Fig. 44. movement. The apparatus is very sensitive, and willindicate the slightest deviation in speed. Portable Tachometer (Fig. 44a).—This instru-ment is similar in construction to the tachometer forpermanent attachment. By applying it by hand to thecentre of rotating shafts, it will instantly and…
Internal combustion engines
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