Looks like some kind of plastic screw through a thick washer.Is it part of a drone? anyone idea which one?
That's it, you win. Your check's in the mail.It looks like an air conditioner on top of a building to me.
This was my thought too. It appears to be the top of a control stick. There is printing over the top of it.I don't believe a fixed wing full size would be circling that low in a residential area. If you enlarge it really big, you can see someone standing at the corner of the building looking up. The persons hands appear, as best I can tell, to be tucked in close to the body as if he could be holding something. Perhaps a controller maybe. The thing could be the top of a throttle quadrant. Most Full size aircraft have the throttles on the right side. This could be a single seat something. But this sure would be risky. Someone might tell on you! That is the extent of my investigative skills.
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