this post was submitted on 08 Sep 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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Any ideas?

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[–] [email protected] 73 points 2 months 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.

[–] [email protected] 14 points 2 months ago (1 children)

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