... ; 2.80% products was exported; Black case and red point 50mm bourdon tube pressure gaugeProducts Description1,Diameter:40mm,50mm ... ,100mm,150mm,200mm;2,Case:Black plastic case and red point;3,Connection:Brass material,stainless steel and rear ... .5,20x1.5;5,Windows:Acryl,glass and PC lens;6,Pressure range:-1.25~1.25MPa;7,Accuracy: ... 1.6 and 2.5. Black case and red point 50mm bourdon tube pressure gauge