... black steel case and ring, glass window,1/2"NPT back or bottom. Tridicator:One gauge measures both temperature and pressure.4" square dial ... ,black steel case and ring,glass window,brass wetted parts,1 ... bottom connectio,dual scalesRange:0-75psi/kPa,60-260F/CAccuracy: pressure ±3-2-3%,temp.±2%***Other ranges or thread ...