... Bourdon Tube Pressure Gauge-Safety Model (Dia. 50,63mm Acc.2,5)Dia.50mm63mmCaseSteel brass coloured with blow-out back Option: St ... range -1...400bar(psi, 1bs, kg/cm2...)Connection threadBrass, G1/2", G1/4", G3/8", NPT, BSPT... Option: St.St.ConnectionBottom ...