... ,S.S crimped bezel, 3.0-10bar,1/4NPT etc. 4.bottom , 63mm(2.5") silicone filled pressure gaugewith back flange , ... : 1.5"(40mm) , 2.0"(50mm), 2.5"(63mm), 3.0"(75mm) ,4.0"(100mm),Pressure Range : -1~0bar to 0~400barAccuracy : ±1%, ±1. ... : Glycerine(standard) Silicone(optional) Gaskets/Filling cap: Neoprene Or Silica gelOPTION 1. With red mark adjustable pointer , 2. With othe unit according requirement ...