d22f196b Tachometer

Fig. 1.53. Tachometer

The tachometer shows the frequency of rotation of a bent shaft of the engine in terms of 1000 min.-1 (fig. 1.53).

It is forbidden to exceed admissible turns of a bent shaft of the engine: the arrow of a tachometer should not come into the RED ZONE of a scale. It can lead to an engine exit out of operation.