Secondary Catalogue
Series: Force and Pressure
Measuring Liquid Pressure
An instrument used to measure the pressure of a liquid is known as a pressure gauge. The simplest form of the pressure gauge is a manometer, which measures the pressure difference.
Pressure
Pressure is the force exerted per unit area. For a constant force, the smaller the area the greater the pressure, and the bigger the area the smaller the pressure. The SI unit of pressure is newton per square metre or pascal.