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  • Lightning rods-glass balls?

    From [email protected]@21:1/5 to All on Mon Jun 22 08:57:42 2020
    Those glass balls were in place to basically burst when lightning would hit the rod it was attached. This giving the homeowner visual confirmation that the rod was hit, and that it provided the protection that it advertised. The balls were then to be
    replaced as a further monitor of any lightning strike.

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