TENGLONG SEALING PRODUCTS MANUFACTORY,Website:://.tenglongsealings.com, YUYAOYUYAO SUNPASS INTERNATIONALSTAINLESS STEEL PRESSURE GAUGEDescription:Indication Range:0~3,000psiCase Nominal Diameter:1-1/2" ; 2", 2- 1/2"; 3"; 4"; 6" Case Material:Stainless SteelWindows:PolycarbonateMovement:Brass, Stainless SteelConnection:Bottom Connection or Center Back Male Connection. Inlet Thread:1/2"; 1/4"; 1/8"; 3/8" BSP, BSPT, NPT or According to customers requirements.Filled Oil:Glycerine, Silicone OilScales:psi, bar, mpa, kg/cm3, Hg single or dual scale or According to customers  requirements.