... pressure of pipes, valve, and machine, with comperetive price. "Stainless Steel Dry Pressure Gauge"1. Dial Size: 4" (100mm)2. Pressure ... /2" NPT, BSP, Customer-made is available5. Case Material: Stainless steel 304 / 316 case6. Dial Material: Aluminum7. Window/Lens: Glass, PC ...