One of the simplest and at the same time the most important hydraulic equipment is the measuring tool, which is considered insignificant by many people.

Any device that displays a hydraulic system parameter is a measuring instrument.

The most important precision instruments used in hydraulic systems:

• Pressure gauge
• Pressure transmitter
• Vacuum gauge and switch
• Temperature indicator and thermocouple
• Flowmeter

For example, a pressure gauge is a system pressure gauge that is very important in a hydraulic system.

The amount of pressure of each line that is read by the pressure gauge and the amount of operation of the operator can be determined with it.

The pressure gauges should be selected in proportion to the operating pressure of the system. The maximum amount of pressure gauges used in the system should not be much more than the operating pressure of the system as it will reduce the display accuracy.

The oil gauge and thermometer gauge also show the amount of system oil that the lack of system oil causes serious damage to the system and the thermometer also shows the oil temperature so that the high temperature does not damage the equipment.