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There are a few knockoff options too, which are not quite as nicely calibrated, but get the job done for much less than Fluke-level prices. Like the FOTRIC TD2.

I think a few people have made homebrew versions too, like this one mentioned on HN: https://news.ycombinator.com/item?id=45137584

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interesting on amazon:

fluke $25k

flir $10k

td2 $1k

These are the kinds of things you look at and think - maybe I DO need night-vision, or a soldering iron with a cpu, or a thermal imager, or a steerable endoscope or now an acoustic imager....

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Has anyone tried acoustic imaging for water leaks inside walls? I live in a multi-floor 1900s Victorian. A leak can affect several units, and tracing the source can mean opening walls or floors in multiple places, and coordinating access has been getting harder with less WFH.

Could one of these tools help map water pipe routes and trace a leak, or are they only going to be useful for air and gas leaks?

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For a water leak a sound imaging device is not going to help you.

You should definitely try a thermal camera. Any moisture will create small temperature differences which are easily picked up by a thermal camera.

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