A device to measure the rate of flow of any agent introduced into a person, such as oxygen or intravenous fluid.
A meter attached to a pipe, e.g. as in anaesthetic equipment, to measure the speed at which a liquid or gas moves in the pipe.
An instrument for measuring the flow of a liquid or gas. Anesthetic equipment is fitted with flowmeters so that the administration of anesthetic gases in different proportions can be controlled.
A device for measuring the movement of a gas or liquid. It is used especially in monitoring the use of anesthetic gases.