Diameter:11/2",2",21/2,3",4" Connectian:radial,bottom connection; axial,center back male connection Diameter:11/2",2",21/2,3",4"Connectian:radial,bottom connection; axial,center back male connectionRange :0-100psi,......0-6000psiScale:psi,bar,Mpa,Kpa,kg/cm2Inlet thread:1/8",1/4",3/8",1/2",BSP,BSPT,NPT OIL FILLED PRESSURE GAUGE