a tap can control it by stopping the water and letting the water throw
This industry is comprised of companies primarily engaged in manufacturing a multitude of miscellaneous monitoring instruments.
A device for controlling the flow of liquid can sometimes be a pipe.
Major industry product segments include aircraft engine instruments; nuclear radiation detection and monitoring instruments; commercial, geophysical, meteorological,
The overall industry leader in 2001 was Thermo Electron Corp. of Waltham, Massachusetts, with sales of $2.2 billion and 12,000 employees.