... other different pressure range. 4.Glass or plastic 1.5"steel screw surface pressure gauge Specifications can be made per customer's ... Steel, blackDesign for window:snap on plastic(for plastic case ), screw in polycarbonatesteel, steel black bezel(two screws )with glass window Note ... ,Φ63 and Φ80 4.U-clamp for gauges in Φ40,Φ50,Φ63 and Φ100 5.Flange Φ40,Φ50,Φ63,Φ100 and Φ160Special ...