Features: 1. Each product has a unique manufacturing part number label on the inner packaging to prove that it is qualified, including part number, model and inspection date information; 2. If you have any questions about the product, please provide us with Manufacturing part numbers are checked and your profits will be guaranteed. 3. Beautiful appearance, light weight, not easy to break, and long service life. 4. Can be used for calculation of industrial, oxygen and other gas flow rates. 5. Widely used to measure single-phase non-pulsating gas flow and control oxygen flow. Specifications: Material: Acrylic & Plastic & Metal Color: Multi-color Applicable Medium: Gas Accuracy: 5% Flow Range: 0-10LPM Working Pressure: 0.6Mpa Working Temperature: 0-60 degrees Celsius Size: 6.65x2.22x9.04cm/2.62inchx0 .87inchx3.56inch (WxTxH) Connection: 0.8cm Pagoda (hose connection) Center distance: 6.65cm/2.62inch Weight: 148g Packing list: 2 x LZQ3-oxygen flow meter