A tachometer (also called a revolution-counter, rev-counter, or RPM gauge) is an instrument that measures the rotation speed of a shaft or disk, as in a motor or other machine.
Tachometers are used to estimate traffic speed and volume (flow). A vehicle is equipped with the sensor and conducts "tach runs" which record the traffic data.
I would never do something like Speed 2 again. If I'd wanted to make those kind of movies I could have signed up for five of them while it was in the can. It wasn't worth it to me. That was just an innocuous, boring movie. Jason Patric
The speed of communication, the speed of information transfer, the cheapness of communication, the ease of moving things around the world are a difference in kind as well as degree. Paul A. Volcker
If they're traveling at the speed of light, their month is perhaps the equivalent of twenty of our years. So they're just buzzing around having a good old time, continuously looking. Dwight Schultz
It is important that the United States move with all deliberate speed to develop and get into usage alternative fuels that will allow us to end our dependence on foreign oil. Virgil Goode
But to be fair, if you take players from my era to now, the game has changed and the players have many more shots. They use them differently than we did. The speed of the game has changed. Ivan Lendl
In the immediate postwar years, the whole of Europe was in a recession. So first of all, it helped us step out of a recession; it gave a certain amount of speed to the economy. But that was the first step. Giovanni Agnelli
The mare set off for home with the speed of a swallow, and going as smoothly and silently. I never had dreamed of such a motion, fluent and graceful, and ambient, soft as the breeze flitting over the flowers, but swift as the summer lightening. Richard Blackmore
With two people and luggage on board she draws four inches of water. Two canoe paddles will move her along at a speed reasonable enough in moderate currents. C. S. Forester
