Capsule pressure gauge are used to measure to measure mico pressure and negative pressure gauge of gas that has no danger of explosion and does not erode alloy. Based on common capsule pressure gauge, stainless steel capsule pressure gauge introduce stainless material used in internals and housing.Shockproof capsule pressure gauge is designed on base of stainless steel capsule pressure gauge,with glycerine filled inside and pressure limiter www.allgakind-instrument.com