this post was submitted on 08 Sep 2024
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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 1 week ago* (last edited 1 week ago) by catch22@programming.dev to c/whatisthisthing@lemmy.world
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Any ideas?

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[–] dsilverz@thelemmy.club 73 points 1 week ago (1 children)

A marker point for geodetic marking. Also known as triangulation station or trigonometrical point, it's fixed to the ground with its known coordinates.

[–] catch22@programming.dev 14 points 1 week ago (1 children)

Cool! Interesting, I thought True North meant that they somehow pointed north given another reference. Thanks for the info.