this post was submitted on 28 Apr 2024
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What is this thing?
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Let us help you identify that mysterious object you’ve found.
Currently in CHALLENGE mode: If you've got something obscure knocking about, post a picture, and let's see how we do. Please prefix such posts with "CHALLENGE:" so we know we've got a fighting chance.
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How does the circumference matter?
It does not. Circumference only tells you speed if you're measuring tire rotations, which this is not.