Manometer (Greek manós - "non-tight" and metréō - "measuring" - a device that measures the pressure of liquid or gasgas.
Manometers are used in all cases where it is necessary to know, control and regulate pressure. Manometers are most often used in the thermal power industry, at chemical, petrochemical, and food industry enterprises.
GOST 2405-88
TU 33.2-14307481-031:2005
It is used for
measurement of excess pressure of liquids, gas and steam.(//tractor-service.com)
Description
Body - steel, painted black.
The glass is technical.
Mechanism - copper-brass alloy.
Degree of protection - IR40.
Operation in the range from -40 to 150 °C.
On the glass there is an indicator of the maximum pressure "adjustable pointer.