Specification Material: Aluminum Alloy, Rubber Oil Delivery Speed: 1-35 L/min/0.26-9.25Gal/min Maximum Working Pressure: 0.6 MPa Operating Temperature: -10°C-＋50°C/14℉-+122℉ Accuracy Value: ±0.3% Number of Batteries: 2 (Included) Screen Type: Five-digit LCD Error Coefficient Setting Range: 0.100---9.999 Measurement Unit: L, GAL, PTS, QTS Applicable Oil Type: Gear Oil, Engine Oil, Antifreeze, Diesel, Ggasoline, Kerosene, Lubricating Oil Battery Voltage (Each): 1.5V Outlet O.D: 15mm/0.59inch Inlet I.D: 13mm/0.51inch Package Included 1*Electronic Oil Metering Gun 1*English Instruction Manual.