Detailed Product Description Bourdon Tube Pressure Gauge with Diaphragm(Dia. 63,75,100,150mm Acc.1,6)Dia.63mm75mm100mm150mmCaseSteel-black, Option: stainless steelSteel-black with bezel-ring, Option: stainless steelSteel-black with bayonet ring, Option: stainless steelMeasuring SystemBrass, Option: St.St.Measure range-1000...-250mbar 0+25...+10000mbarConnection threadBrass, G1/4", G3/8", NPT, ...