Scales from 0 to 25 liters per minute in one liter graduations. Turn off the HF on Tig welders or you may receive an electric shock. Designed to ensure impact resistance and clarity. Release the Mig wire tensioner to stop the wire feed when testing. Simply place the tester over the MIG or TIG gas nozzle and the gas flow is measured from the top of the ball, can be used for all gases. Length: Approx 14cm Color: As the picture shows Flow meter tester scales from 0 - 25 liters / minute in one liter graduations, used to test gas flow to the Mig or Tig torch Features: 1.Designed for check gas flow on Tig or Mig torches. 2.Release the Mig wire tensioner to stop wire feed when testing. 3.Turn off the HF on Tig welders or you may receive an electric shock. 4.Simply place the tester on the Mig or Tig gas nozzle and the gas flow is measured through the top of the ball. 5.Flow meter tester scaled from 0 - 25 liters/minute in one liter graduations, used to test gas flow to the Mig or Tig torch. Package included:1 * Gas Flow Meter Tester