Civil Engineering - Hydraulics - Discussion

An instrument for measuring the pressure of a liquid or gas, or something related to pressure (such as the compressibility of liquid). Piezometers are often placed in boreholes to monitor the pressure or depth of groundwater.

A piezometer is either a device used to measure liquid pressure in a system by measuring the height to which a column of the liquid rises against gravity or a device which measures the pressure of groundwater at a specific point. A piezometer is designed to measure static pressures and thus differs from a pitot tube by not being pointed into the fluid flow.

For very low pressure. it was the current meter.