Application Uesd for hydraulic and pneumatic systems Compressors,compressed air system Suitable for fluid medium which does not clog connection port or stainless steel Case:Stainless Steel Ring:Stainless Steel Window:Acrylic Socket & Connection:Stainless Steel Movement:Stainless Steel Bourdon Tube:Stainless Steel Pointer and Dial:Aluminum Range:Vacuum,compound 0-10000psi Accuracy:1.6% Mounting Type:Bottom Connection