revolution counter

American  

noun

1. a device for counting or recording the number of revolutions made by a rotating shaft, as of a motor or engine.

---

Example Sentences

A final twist, a glance at the revolution counter, and he was done.

From Literature

I tried to steal a quick glance at my revolution counter.

From Time Magazine Archive

In the machines they were accustomed to there was nothing but a revolution counter, and sometimes, though not always, a compass.

From Project Gutenberg

The watch, anemometer and revolution counter were all automatically started and stopped simultaneously.

From Project Gutenberg

I had nothing to do other than to give occasional attention to the revolution counter, altimetre, and speed-dial.

From Project Gutenberg