Features Pressure Dial --- Able to measure positive pressure, negative pressure and differential pressure, this gauge is very reliable. Clear Viewing --- The transparent cover enables a clear view on the pointer and scale, which will largely facilitate the work. Practical Use --- For microelectronics, aerospace, environmental engineering, bioengineering, intelligent buildings and so on. High Accuracy --- Ensuring full scale ±2%, ±3%, ±4% high accuracy, the differential pressure gauge is very durable for using. Good Material --- Adopting high quality aluminium material, the light weight and compact pressure gauge is easy to install. Specification: Item Type: Differential Pressure Gauge Material: Aluminium Colour: Grey Interface: 1/8in female thread normal temperature and normal pressure high and low pressure dual interface, on the back. Accuracy: 21℃ full scale ±2%, ±3%, ±4%.   Temperature Range: -7℃ to 60℃ Application: For microelectronics, aerospace, environmental engineering, bioengineering, intelligent buildings, HVAC, food and beverage, accuracy electronic processing and other application fields.  Package List:1 x Differential Pressure Gauge3 x Installation Screw2 x 1/8 NPT Hole Plug2 x 1/8 Bard Connector4 x Coupler4 x Slot Screw Note:Please allow a small error of 1‑2cm in the manual measurement. Package List 1 x Differential Pressure Gauge 3 x Installation Screw 2 x 1/8 NPT Hole Plug 2 x 1/8 Bard Connector 4 x Coupler 4 x Slot Screw