Here are some common types of pressure gauges:

* Bourdon tube gauge: This is a common type of gauge that uses a curved tube that straightens out when pressure is applied. The movement of the tube is then connected to a pointer that indicates the pressure.

* Diaphragm gauge: This gauge uses a flexible diaphragm that is deflected by pressure. The deflection is then measured and converted to a pressure reading.

* Strain gauge: This gauge uses a small strip of material that changes resistance when stretched or compressed. This change in resistance is measured and converted to a pressure reading.

* Digital pressure gauge: This gauge uses a sensor to measure pressure and then displays the reading digitally.

The type of pressure gauge used will depend on the specific application and the range of pressures being measured.