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.

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Example Sentences

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

From Time Magazine Archive

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

From "Brave New World" by Aldous Huxley

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

From The War in the Air; Vol. 1 The Part played in the Great War by the Royal Air Force by Raleigh, Walter Alexander, Sir

As the tube, gg, dips into the water, it does not allow the gas to escape, and this permits of the revolution counter that the rod actuates being placed in an external case, CC'.

From Scientific American Supplement, No. 481, March 21, 1885 by Various

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

From The Early History of the Airplane by Wright, Orville