Skil HD529401 Owner's Manual page 88

Symbol Designation/Explanation
This symbol designates that this tool is listed by
the Canadian Standards Association, to United
States and Canadian Standards.
This symbol designates that this tool is listed by
the Intertek Testing Services, to United States and
Canadian Standards.
This symbol designates that this tool complies to
NOM Mexican Standards.
This symbol designates that this tool is listed by
the California Energy Commission.
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