the world > matter > liquid > liquid flow > action or process of flowing > [noun] > rate of flow > instrument to regulate or measure rate > specifically water pressure (2)
An instrument for graphically recording variations of pressure of a fluid, esp. of blood in the vessels of a living animal; a recording manometer…
a thin tube (usually rigid with a right-angled bend) which may be placed in a flow of fluid with an open end facing upstream, so that the impact…