Detailed Product Description ZL0203 pressure meterDiameter: 1.5, 2, 2.5, 3.5, 4, 4.5 and 6 inchesCase material: 304 stainless steelTube and socket: brassConnection: 1/8, 1/4, 1/2, 3/8 inches, NPT, BSP or BSPTScale range: -1 to 0 to 600 barsAccuracy: 1, 1.6 and 2.5Windows: acrylic, glass and polycarbonate lens are available