Features: This 0 to 6000PSI/40MPa liquid filled pressure gauges delivers accuracy measurement with steel corrosion resistance, ideal for monitoring diving equipment air pumps. double scale /MPa marking and oil damped face ensure vibration resistant readability in pressure environment up to 40MPa/6000PSI. trust by professional dive and industrial technicians for its hard reliability during underwater expeditions or pneumatic system maintenance. Features a seal liquid filled housing to stabilize needle movement when testing scubas tanks, inflatable boats, or condensed air systems. The small 40MPa manometer's shatterproof lens and lightweight design with stand saltwater exposure while remaining easy carry for dives site diagnostics. Specifications: Material: Steel Diameter: about 4.5 cm/1.8 inches Length: about 4.3 cm/1.7 inches geatest measurement ranges: 0-6000 , 0-40MPa Package Includes: 1xPump gauges note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the differences between different monitors, the picture may not reflect the actual colorful of the item.