This? Oh nothing, just a precisely machined nest for a spherical retroreflector used in hyper-accurate laser interferometry.

Sep 22, 2026 · 3:49 PM UTC

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Replying to @DustinWalper
all this time i thought it was a skateboard wheel
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Replying to @DustinWalper
Mr Walper , I’ve been a fan of yours since Newton. I’d just like to let you know there’s a whole team of fake Dustin’s using a made up FB page with a border collie, and pic of you , to scam people into bitcoin - they’re unreal . The details are spot on . No way else to notify
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Replying to @DustinWalper
hot glue > bolts
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