Specifications: Nominal dimensions: 2",3-1/2'',3'',4-1/2'',4'',5'',6'' Measurement Range: 0-5000psi Case, Frame: Stainless Steel Window: Construction Plastic Cement ,glass Dial Face: Aluminum Alloy Movement: Stainless Steel Burdon Tube: Stainless Steel Assembling Connectors: 300 Series Stainless Steel Assembling Threads: 1/8" , 1/4" , 3/8" , 1/2" PT, NPT, BSP (can be made separately according to customers' requirements) Indicator: Aluminum Alloy Piece Precision: 3-2-3%(2" ),+- 15%(2-1/2" ~3" ~4" ) Permissible Working Temperature: -20Cto 80 C