The lead pencil test is the way to go even deep pocket companies use the pencil method.
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The lead pencil test is the way to go even deep pocket companies use the pencil method.
Pencil/ fingernail. To use or not to use? That's a personal choice. As for me a tool purposely made for the discovery of BHN in lead is fine with me. I don't have the talent to speculate BHN %'s . I need a tool or someone to tell me what the %'s is?