Detailed Product Description 40mm pressure meterDiameter: 1.5, 2, 2.5, 3.5, 4, 4.5, 6, 8, and 10 inchesCase and ring: iron with coated chromeTube and socket: brassConnection: 1/8, 1/4, 1/2, 3/8 inches, NPT, BSP or BSPTType: bottom or backScale range: -1-0-600bar Other scale as per your requirementsWindows:glass