What is this thing?

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[Solved] Anyone know what this is? They are embedded in the sidewalks around the city (programming.dev)

submitted 2 months ago* (last edited 2 months ago) by [email protected] to c/[email protected]

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Any ideas?

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[–] [email protected] 38 points 2 months ago

Survey marker, used by surveyors to calibrate equipment. So I've been told, anyway.

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