Features: Designed to check gas flow on TIG or MIG torches. Flowmeter tester scaled from 0 to 25 liters per minute in one-liter increments, used for measuring gas flow at the MIG or TIG torch. Simply place the tester over the MIG or TIG gas nozzle and read the flow measurement from the top of the ball. Disable the HF on TIG welders to avoid electric shock. Release the MIG wire tensioner to stop wire feeding during testing. Specifications: Color: Transparent + Black Length: Approximately 13 cm (5.12 inches) Top Diameter: 1 cm (0.39 inches) Quantity: 1 piece Note: 1. Conversion: 1 cm = 10 mm = 0.39 inches 2. Please allow 1–3 mm error due to manual measurement. Ensure you are comfortable with this before purchasing. 3. Due to differences in monitor displays, the image may not reflect the actual color of the item. Package Contents: 1 x Gas Flow Meter Tester