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CaptainTruth

(7,466 posts)
5. I'd tie a large fishing weight on a long string & lower it down a pipe until it hit bottom.
Fri Dec 13, 2019, 10:59 PM
Dec 2019

Then pull it up & measure the string. If it's really deep, I'd fold the string in half a couple/few times & then measure it, to make it easier, then multiply accordingly.

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