... ",2",2.5",3",4",6". Panel Mount Stainless Steel Liquid Filled Glycerine Pressure Gauge 1. Diameter: 1 ½", 2", 2 ½ ... center back male connection;7.Range:0~10,000psi;8.Scale:psi,bar, Mpa, Kpa, kg/cm2,Hg Single or ... dual scale or according to customers order.9.Oil composing:glyceine, silicone ... 2.5%,1.6%,1%. Panel Mount Stainless Steel Liquid Filled Glycerine Pressure Gauge