​What Is the Purpose of a Gas Lens

question 7

Multiple Choice

​What is the purpose of a gas lens?

• A) ​It filters out most of the harmful UV and some of the IR light.
• B) ​It reduces the turbulence in the shielding gas.
• C) ​It filters out dust and dirt that might be in the shielding gas due to a dirty shielding gas hose.
• D) ​It helps to see the molten weld pool by magnifying it.

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