Click on the image to check the artwork
By certification 
Place of Origin: Ningbo
Dial:3.5 inches
Nominal size: (mm): Ø88
Scale ranges: 0-30psi or as per request
Accuracy class: 2.5/1.6
Connection Thread: 1/4" NPT or as per request
Mounting: bottom type/back type
Wetted parts: Copper alloy
Case material: Chrome plated steel case and ring
Window: PC or glass
Applications: For gaseous and liquid media
Working Principle
The pressure gauge passes the elastic deformation of the sensitive elements (Bourdon tube, bellows, bellows) in the gauge, and then the pressure change is transmitted to the pointer by the conversion mechanism of the movement in the gauge, causing the pointer to rotate to display the pressure.
http://www.meiyipressuregauge.com/
