... Gauge for Chemical Use (Dia. 63,100,150mm Acc.1,6/1.0)Dia.63mm100mm150mmCaseSt.St. with BajonettringMeasuring SystemSt.St.Measure range ... -1...40bar(psi, 1bs, kg/cm2...) -1...600bar(psi, 1bs, kg/cm2...)Connection threadBrass ... , G1/4", G3/8", NPT, BSPT... St.St.Brass, G1/2", G1/4", NPT, ...