Detailed Product Description Common pressure gaugeCase size: 1.5, 2 and 2.5 inches Case material: steel, cuprum Tube and socket: brass, steel with plating nickelConnection: 1/8, 1/4 inches, NPT, BSP or BSPTType: bottom or backScale range: -1-0-600bar, other scale range upon to customer's requestWindows: acrylic, polycarbonate and acrylic for choiceAccuracy class: 1.6 or 2.5