Instrument is a Geonics EM16 VLF receiver, using in the mineral exploration industry to find buried linear conductors.

  • NoFuckingWaynado@lemmy.world
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    1 month ago

    Lots of good suggestions already, but you could also try oxalic acid aka Barkeeps Friend. It’s pretty mild and works wonders on metals.

    • Troy@lemmy.caOP
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      1 month ago

      I use citric acid on a lot of connectors when the pins are corroded (for the same reason). Revived a lot of cables that way. Good advice :)