Here is an autocad dwg file for details of a Pressure indicator . In a pneumatic pressure indicator, the pressure on the piston or diaphragm (the sensing element) is transmitted by means of a rod to the arm of a recording instrument.
Wall elevation and column
Chimney plan and elevation
Sectional detail and const
Detail steel handrail sect
Insulating wall section vi
Foundation plan and sectio
Foundation plan, cover pla
Details of connection in a
Foundation section plan la
Longitude plan and section
Caravan Stands section det
Stair Plan