High grade aluminium and stainless construction. Suitable for a range of liquids including but not limited to diesel, biodiesel, methanol, oils, hydraulic oils, motor oils, vegetable oils. LCD meter display, easy to read and control the total volume Max. measuring scale 9999.9, when it reaches this limit, it will start over again Easy to install and maintain SPECIFICATION: Nozzle size: 25cm/1" Material: Aluminum alloy Flowing rated :10-75L/min. Accuracy (% of Reading): ± 1% , Max. working pressure :0.2Mpa, Operating Temperature Range: -10°C to +60°C . Size(LxW): 37.5 x 12.5cm Package Includes: 1 x NUZAMAS Fuel Delivery Gun To use: 1. Press "DISPLAY" for 1 second to reset to zero. 2. Press "CALIBRATE" indicating the cumulative total fueling. When the cumulative total reaches a maximum reading 9999,9, it will automatically reset to zero. 3. Press “CALIBRATE" and hold for 10 seconds, press "DISPLAY" or "CALIBRATE" for adjusting.